672644008 has 16 divisors (see below), whose sum is σ = 1263315060. Its totient is φ = 335760000.

The previous prime is 672643987. The next prime is 672644017. The reversal of 672644008 is 800446276.

672644008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 478821924 + 193822084 = 21882^2 + 13922^2 .

It is a super-2 number, since 2×672644008² = 904899922996608128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65143 + ... + 74758.

Almost surely, 2^672644008 is an apocalyptic number.

It is an amenable number.

672644008 is a deficient number, since it is larger than the sum of its proper divisors (590671052).

672644008 is a wasteful number, since it uses less digits than its factorization.

672644008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140508 (or 140504 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 672644008 is about 25935.3813929929. The cubic root of 672644008 is about 876.1835447290.

It can be divided in two parts, 672 and 644008, that added together give a triangular number (644680 = T₁₁₃₅).

The spelling of 672644008 in words is "six hundred seventy-two million, six hundred forty-four thousand, eight".