672424992 has 72 divisors (see below), whose sum is σ = 1948332204. Its totient is φ = 219907584.

The previous prime is 672424967. The next prime is 672425023. The reversal of 672424992 is 299424276.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 636855696 + 35569296 = 25236^2 + 5964^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6763 + ... + 37290.

Almost surely, 2^672424992 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 672424992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974166102).

672424992 is an abundant number, since it is smaller than the sum of its proper divisors (1275907212).

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

672424992 is a wasteful number, since it uses less digits than its factorization.

672424992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44122 (or 44111 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 672424992 is about 25931.1587091669. The cubic root of 672424992 is about 876.0884379344.

The spelling of 672424992 in words is "six hundred seventy-two million, four hundred twenty-four thousand, nine hundred ninety-two".