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69074069 = 496913901
BaseRepresentation
bin1000001110111…
…11110010010101
311210222022210212
410013133302111
5120140332234
610504255205
71466056061
oct407376225
9153868725
1069074069
1135a99409
121b171505
131140623c
149260aa1
1560e65ce
hex41dfc95

69074069 has 4 divisors (see below), whose sum is σ = 69092940. Its totient is φ = 69055200.

The previous prime is 69074023. The next prime is 69074087. The reversal of 69074069 is 96047096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35259844 + 33814225 = 5938^2 + 5815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-69074069 is a prime.

It is a super-2 number, since 2×690740692 = 9542454016433522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69074669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982 + ... + 11919.

It is an arithmetic number, because the mean of its divisors is an integer number (17273235).

Almost surely, 269074069 is an apocalyptic number.

It is an amenable number.

69074069 is a deficient number, since it is larger than the sum of its proper divisors (18871).

69074069 is a wasteful number, since it uses less digits than its factorization.

69074069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18870.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 69074069 is about 8311.0810969452. The cubic root of 69074069 is about 410.3033032340.

The spelling of 69074069 in words is "sixty-nine million, seventy-four thousand, sixty-nine".

Divisors: 1 4969 13901 69074069