69669656 has 32 divisors (see below), whose sum is σ = 157152000. Its totient is φ = 28286496.

The previous prime is 69669647. The next prime is 69669661. The reversal of 69669656 is 65696696.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 69669598 and 69669607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31676 + ... + 33803.

It is an arithmetic number, because the mean of its divisors is an integer number (4911000).

Almost surely, 2^69669656 is an apocalyptic number.

It is an amenable number.

69669656 is an abundant number, since it is smaller than the sum of its proper divisors (87482344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69669656 is a wasteful number, since it uses less digits than its factorization.

69669656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65511 (or 65507 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 53.

The square root of 69669656 is about 8346.8350888226. The cubic root of 69669656 is about 411.4792018177.

The spelling of 69669656 in words is "sixty-nine million, six hundred sixty-nine thousand, six hundred fifty-six".