71088664 has 16 divisors (see below), whose sum is σ = 133380720. Its totient is φ = 35520480.

The previous prime is 71088659. The next prime is 71088697. The reversal of 71088664 is 46688017.

It is a congruent number.

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, 21694 + ... + 24754.

It is an arithmetic number, because the mean of its divisors is an integer number (8336295).

Almost surely, 2^71088664 is an apocalyptic number.

It is an amenable number.

71088664 is a deficient number, since it is larger than the sum of its proper divisors (62292056).

71088664 is a wasteful number, since it uses less digits than its factorization.

71088664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5970 (or 5966 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 71088664 is about 8431.4093721038. The cubic root of 71088664 is about 414.2540701270.

The spelling of 71088664 in words is "seventy-one million, eighty-eight thousand, six hundred sixty-four".