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69930061 = 174113533
BaseRepresentation
bin1000010101100…
…00110001001101
311212120211000021
410022300301031
5120400230221
610534502141
71506252505
oct412606115
9155524007
1069930061
1136523543
121b504951
1311645a46
149404a05
156215041
hex42b0c4d

69930061 has 4 divisors (see below), whose sum is σ = 74043612. Its totient is φ = 65816512.

The previous prime is 69930053. The next prime is 69930067. The reversal of 69930061 is 16003996.

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 61921161 + 8008900 = 7869^2 + 2830^2 .

It is a cyclic number.

It is not a de Polignac number, because 69930061 - 23 = 69930053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69929999 and 69930026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69930067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056750 + ... + 2056783.

It is an arithmetic number, because the mean of its divisors is an integer number (18510903).

Almost surely, 269930061 is an apocalyptic number.

It is an amenable number.

69930061 is a deficient number, since it is larger than the sum of its proper divisors (4113551).

69930061 is a wasteful number, since it uses less digits than its factorization.

69930061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113550.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 69930061 is about 8362.4195661304. The cubic root of 69930061 is about 411.9912277800.

The spelling of 69930061 in words is "sixty-nine million, nine hundred thirty thousand, sixty-one".

Divisors: 1 17 4113533 69930061