71529664 has 28 divisors (see below), whose sum is σ = 142279624. Its totient is φ = 35679744.

The previous prime is 71529641. The next prime is 71529677. The reversal of 71529664 is 46692517.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32404 + ... + 34540.

Almost surely, 2^71529664 is an apocalyptic number.

It is an amenable number.

71529664 is a deficient number, since it is larger than the sum of its proper divisors (70749960).

71529664 is a wasteful number, since it uses less digits than its factorization.

71529664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 2662 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 71529664 is about 8457.5211498405. The cubic root of 71529664 is about 415.1089161071.

The spelling of 71529664 in words is "seventy-one million, five hundred twenty-nine thousand, six hundred sixty-four".