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69069069 = 3223333667
BaseRepresentation
bin1000001110111…
…10100100001101
311210222001221200
410013132210031
5120140202234
610504220113
71466035356
oct407364415
9153861850
1069069069
1135a95683
121b16a639
1311403b94
14925cd2d
1560e4d99
hex41de90d

69069069 has 12 divisors (see below), whose sum is σ = 104104416. Its totient is φ = 44043912.

The previous prime is 69069059. The next prime is 69069083. The reversal of 69069069 is 96096096.

It is not a de Polignac number, because 69069069 - 25 = 69069037 is a prime.

It is a super-2 number, since 2×690690692 = 9541072585053522, which contains 22 as substring.

69069069 is a strobogrammatic number because it is the same when read upside-down.

69069069 is a modest number, since divided by 69069 gives 69 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69069059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166627 + ... + 167040.

It is an arithmetic number, because the mean of its divisors is an integer number (8675368).

Almost surely, 269069069 is an apocalyptic number.

69069069 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

69069069 is a deficient number, since it is larger than the sum of its proper divisors (35035347).

69069069 is a wasteful number, since it uses less digits than its factorization.

69069069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333696 (or 333693 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 69069069 is about 8310.7802882762. The cubic root of 69069069 is about 410.2934029147.

The spelling of 69069069 in words is "sixty-nine million, sixty-nine thousand, sixty-nine".

Divisors: 1 3 9 23 69 207 333667 1001001 3003003 7674341 23023023 69069069