75664716 has 12 divisors (see below), whose sum is σ = 176551032. Its totient is φ = 25221568.

The previous prime is 75664691. The next prime is 75664747. The reversal of 75664716 is 61746657.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3152685 + ... + 3152708.

It is an arithmetic number, because the mean of its divisors is an integer number (14712586).

Almost surely, 2^75664716 is an apocalyptic number.

It is an amenable number.

75664716 is an abundant number, since it is smaller than the sum of its proper divisors (100886316).

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

75664716 is a wasteful number, since it uses less digits than its factorization.

75664716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305400 (or 6305398 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 75664716 is about 8698.5467751803. The cubic root of 75664716 is about 422.9585437411.

The spelling of 75664716 in words is "seventy-five million, six hundred sixty-four thousand, seven hundred sixteen".