80879664 has 20 divisors (see below), whose sum is σ = 208939256. Its totient is φ = 26959872.

The previous prime is 80879657. The next prime is 80879671. The reversal of 80879664 is 46697808.

It is an interprime number because it is at equal distance from previous prime (80879657) and next prime (80879671).

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1684993 = 80879664 / (8 + 0 + 8 + 7 + 9 + 6 + 6 + 4).

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, 842449 + ... + 842544.

Almost surely, 2^80879664 is an apocalyptic number.

It is an amenable number.

80879664 is an abundant number, since it is smaller than the sum of its proper divisors (128059592).

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

80879664 is a wasteful number, since it uses less digits than its factorization.

80879664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685004 (or 1684998 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 80879664 is about 8993.3121818382. The cubic root of 80879664 is about 432.4605000290.

The spelling of 80879664 in words is "eighty million, eight hundred seventy-nine thousand, six hundred sixty-four".