80865912 has 32 divisors (see below), whose sum is σ = 203046480. Its totient is φ = 26837760.

The previous prime is 80865877. The next prime is 80865971. The reversal of 80865912 is 21956808.

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, 1639 + ... + 12822.

Almost surely, 2^80865912 is an apocalyptic number.

It is an amenable number.

80865912 is an abundant number, since it is smaller than the sum of its proper divisors (122180568).

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

80865912 is a wasteful number, since it uses less digits than its factorization.

80865912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14703 (or 14699 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 80865912 is about 8992.5475811919. The cubic root of 80865912 is about 432.4359881653.

The spelling of 80865912 in words is "eighty million, eight hundred sixty-five thousand, nine hundred twelve".