672736812 has 48 divisors (see below), whose sum is σ = 1758715392. Its totient is φ = 198348480.

The previous prime is 672736793. The next prime is 672736873. The reversal of 672736812 is 218637276.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63988 + ... + 73755.

It is an arithmetic number, because the mean of its divisors is an integer number (36639904).

Almost surely, 2^672736812 is an apocalyptic number.

It is an amenable number.

672736812 is an abundant number, since it is smaller than the sum of its proper divisors (1085978580).

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

672736812 is a wasteful number, since it uses less digits than its factorization.

672736812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137798 (or 137796 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 672736812 is about 25937.1704701959. The cubic root of 672736812 is about 876.2238382560.

The spelling of 672736812 in words is "six hundred seventy-two million, seven hundred thirty-six thousand, eight hundred twelve".