672733940 has 12 divisors (see below), whose sum is σ = 1412741316. Its totient is φ = 269093568.

The previous prime is 672733937. The next prime is 672733973. The reversal of 672733940 is 49337276.

It can be written as a sum of positive squares in 2 ways, for example, as 178649956 + 494083984 = 13366^2 + 22228^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16818329 + ... + 16818368.

It is an arithmetic number, because the mean of its divisors is an integer number (117728443).

Almost surely, 2^672733940 is an apocalyptic number.

It is an amenable number.

672733940 is an abundant number, since it is smaller than the sum of its proper divisors (740007376).

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

672733940 is a wasteful number, since it uses less digits than its factorization.

672733940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33636706 (or 33636704 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 672733940 is about 25937.1151055780. The cubic root of 672733940 is about 876.2225913501. Note that the first 3 decimals are identical.

The spelling of 672733940 in words is "six hundred seventy-two million, seven hundred thirty-three thousand, nine hundred forty".