80665136 has 20 divisors (see below), whose sum is σ = 165482712. Its totient is φ = 37959936.

The previous prime is 80665111. The next prime is 80665141. The reversal of 80665136 is 63156608.

It is a junction number, because it is equal to n+sod(n) for n = 80665096 and 80665105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148010 + ... + 148553.

Almost surely, 2^80665136 is an apocalyptic number.

It is an amenable number.

80665136 is an abundant number, since it is smaller than the sum of its proper divisors (84817576).

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

80665136 is a wasteful number, since it uses less digits than its factorization.

80665136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296588 (or 296582 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 80665136 is about 8981.3771772485. The cubic root of 80665136 is about 432.0778037735.

The spelling of 80665136 in words is "eighty million, six hundred sixty-five thousand, one hundred thirty-six".