69000056 has 8 divisors (see below), whose sum is σ = 129375120. Its totient is φ = 34500024.

The previous prime is 69000049. The next prime is 69000067. The reversal of 69000056 is 65000096.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×69000056² = 9522015456006272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68999989 and 69000034.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4312496 + ... + 4312511.

It is an arithmetic number, because the mean of its divisors is an integer number (16171890).

Almost surely, 2^69000056 is an apocalyptic number.

It is an amenable number.

69000056 is a deficient number, since it is larger than the sum of its proper divisors (60375064).

69000056 is a wasteful number, since it uses less digits than its factorization.

69000056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8625013 (or 8625009 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 69000056 is about 8306.6272337213. The cubic root of 69000056 is about 410.1567039304.

The spelling of 69000056 in words is "sixty-nine million, fifty-six", and thus it is an aban number and an uban number.