801664972 has 12 divisors (see below), whose sum is σ = 1416025800. Its totient is φ = 397086176.

The previous prime is 801664861. The next prime is 801664987. The reversal of 801664972 is 279466108.

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, 936097 + ... + 936952.

It is an arithmetic number, because the mean of its divisors is an integer number (118002150).

Almost surely, 2^801664972 is an apocalyptic number.

It is an amenable number.

801664972 is a deficient number, since it is larger than the sum of its proper divisors (614360828).

801664972 is a wasteful number, since it uses less digits than its factorization.

801664972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873160 (or 1873158 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 801664972 is about 28313.6887741601. The cubic root of 801664972 is about 928.9613300845.

The spelling of 801664972 in words is "eight hundred one million, six hundred sixty-four thousand, nine hundred seventy-two".