71960664 has 32 divisors (see below), whose sum is σ = 180198000. Its totient is φ = 23947392.

The previous prime is 71960639. The next prime is 71960719. The reversal of 71960664 is 46606917.

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, 14902 + ... + 19130.

Almost surely, 2^71960664 is an apocalyptic number.

It is an amenable number.

71960664 is an abundant number, since it is smaller than the sum of its proper divisors (108237336).

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

71960664 is a wasteful number, since it uses less digits than its factorization.

71960664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947 (or 4943 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 71960664 is about 8482.9631615374. The cubic root of 71960664 is about 415.9409895340.

The spelling of 71960664 in words is "seventy-one million, nine hundred sixty thousand, six hundred sixty-four".