672679936 has 72 divisors (see below), whose sum is σ = 1434470310. Its totient is φ = 314277888.

The previous prime is 672679927. The next prime is 672679937. The reversal of 672679936 is 639976276.

It can be written as a sum of positive squares in only one way, i.e., 494617600 + 178062336 = 22240^2 + 13344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672679937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4839355 + ... + 4839493.

Almost surely, 2^672679936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672679936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717235155).

672679936 is an abundant number, since it is smaller than the sum of its proper divisors (761790374).

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

672679936 is an equidigital number, since it uses as much as digits as its factorization.

672679936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 158 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 55.

The square root of 672679936 is about 25936.0740282719. The cubic root of 672679936 is about 876.1991443437.

The spelling of 672679936 in words is "six hundred seventy-two million, six hundred seventy-nine thousand, nine hundred thirty-six".