80664940 has 24 divisors (see below), whose sum is σ = 172594800. Its totient is φ = 31656768.

The previous prime is 80664923. The next prime is 80664967. The reversal of 80664940 is 4946608.

It is a self number, because there is not a number n which added to its sum of digits gives 80664940.

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, 36990 + ... + 39109.

It is an arithmetic number, because the mean of its divisors is an integer number (7191450).

Almost surely, 2^80664940 is an apocalyptic number.

It is an amenable number.

80664940 is an abundant number, since it is smaller than the sum of its proper divisors (91929860).

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

80664940 is a wasteful number, since it uses less digits than its factorization.

80664940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76161 (or 76159 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 80664940 is about 8981.3662657749. The cubic root of 80664940 is about 432.0774538193.

The spelling of 80664940 in words is "eighty million, six hundred sixty-four thousand, nine hundred forty".