80665508 has 96 divisors (see below), whose sum is σ = 187729920. Its totient is φ = 29399040.

The previous prime is 80665483. The next prime is 80665517. The reversal of 80665508 is 80556608.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417860 + ... + 418052.

It is an arithmetic number, because the mean of its divisors is an integer number (1955520).

Almost surely, 2^80665508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80665508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93864960).

80665508 is an abundant number, since it is smaller than the sum of its proper divisors (107064412).

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

80665508 is a wasteful number, since it uses less digits than its factorization.

80665508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 80665508 is about 8981.3978867435. The cubic root of 80665508 is about 432.0784679708.

Subtracting from 80665508 its reverse (80556608), we obtain a square (108900 = 330²).

The spelling of 80665508 in words is "eighty million, six hundred sixty-five thousand, five hundred eight".