69725664 has 48 divisors (see below), whose sum is σ = 203369040. Its totient is φ = 23241600.

The previous prime is 69725647. The next prime is 69725671. The reversal of 69725664 is 46652796.

It is a tau number, because it is divible by the number of its divisors (48).

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, 39487 + ... + 41214.

It is an arithmetic number, because the mean of its divisors is an integer number (4236855).

Almost surely, 2^69725664 is an apocalyptic number.

It is an amenable number.

69725664 is an abundant number, since it is smaller than the sum of its proper divisors (133643376).

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

69725664 is a wasteful number, since it uses less digits than its factorization.

69725664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80720 (or 80706 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 69725664 is about 8350.1894589285. The cubic root of 69725664 is about 411.5894361032.

The spelling of 69725664 in words is "sixty-nine million, seven hundred twenty-five thousand, six hundred sixty-four".