672818620 has 24 divisors (see below), whose sum is σ = 1423710288. Its totient is φ = 267072000.

The previous prime is 672818617. The next prime is 672818659. The reversal of 672818620 is 26818276.

It is a congruent number.

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, 125781 + ... + 131020.

It is an arithmetic number, because the mean of its divisors is an integer number (59321262).

Almost surely, 2^672818620 is an apocalyptic number.

It is an amenable number.

672818620 is an abundant number, since it is smaller than the sum of its proper divisors (750891668).

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

672818620 is a wasteful number, since it uses less digits than its factorization.

672818620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256941 (or 256939 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 672818620 is about 25938.7474639775. The cubic root of 672818620 is about 876.2593544802.

The spelling of 672818620 in words is "six hundred seventy-two million, eight hundred eighteen thousand, six hundred twenty".