672900840 has 48 divisors (see below), whose sum is σ = 2186928900. Its totient is φ = 179440128.

The previous prime is 672900829. The next prime is 672900853. The reversal of 672900840 is 48009276.

It can be written as a sum of positive squares in 2 ways, for example, as 550090116 + 122810724 = 23454^2 + 11082^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 672900795 and 672900804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 934225 + ... + 934944.

Almost surely, 2^672900840 is an apocalyptic number.

672900840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

672900840 is an abundant number, since it is smaller than the sum of its proper divisors (1514028060).

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

672900840 is a wasteful number, since it uses less digits than its factorization.

672900840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869186 (or 1869179 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 672900840 is about 25940.3323031915. The cubic root of 672900840 is about 876.2950466700.

The spelling of 672900840 in words is "six hundred seventy-two million, nine hundred thousand, eight hundred forty".