672419636 has 48 divisors (see below), whose sum is σ = 1436144640. Its totient is φ = 269256960.

The previous prime is 672419623. The next prime is 672419659. The reversal of 672419636 is 636914276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11816 + ... + 38528.

It is an arithmetic number, because the mean of its divisors is an integer number (29919680).

Almost surely, 2^672419636 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 672419636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718072320).

672419636 is an abundant number, since it is smaller than the sum of its proper divisors (763725004).

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

672419636 is a wasteful number, since it uses less digits than its factorization.

672419636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26784 (or 26782 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 672419636 is about 25931.0554355198. The cubic root of 672419636 is about 876.0861118548.

The spelling of 672419636 in words is "six hundred seventy-two million, four hundred nineteen thousand, six hundred thirty-six".