80664420 has 24 divisors (see below), whose sum is σ = 225860544. Its totient is φ = 21510496.

The previous prime is 80664413. The next prime is 80664433. The reversal of 80664420 is 2446608.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 672144 + ... + 672263.

It is an arithmetic number, because the mean of its divisors is an integer number (9410856).

Almost surely, 2^80664420 is an apocalyptic number.

It is an amenable number.

80664420 is an abundant number, since it is smaller than the sum of its proper divisors (145196124).

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

80664420 is a wasteful number, since it uses less digits than its factorization.

80664420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344419 (or 1344417 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 80664420 is about 8981.3373169033. The cubic root of 80664420 is about 432.0765253665.

The spelling of 80664420 in words is "eighty million, six hundred sixty-four thousand, four hundred twenty".