80640468 has 24 divisors (see below), whose sum is σ = 209068160. Its totient is φ = 26880120.

The previous prime is 80640467. The next prime is 80640479. The reversal of 80640468 is 86404608.

80640468 is a `hidden beast` number, since 8 + 0 + 640 + 4 + 6 + 8 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80640467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373228 + ... + 373443.

Almost surely, 2^80640468 is an apocalyptic number.

It is an amenable number.

80640468 is an abundant number, since it is smaller than the sum of its proper divisors (128427692).

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

80640468 is a wasteful number, since it uses less digits than its factorization.

80640468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746684 (or 746676 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 80640468 is about 8980.0037861907. The cubic root of 80640468 is about 432.0337550785.

The spelling of 80640468 in words is "eighty million, six hundred forty thousand, four hundred sixty-eight".