672787520 has 28 divisors (see below), whose sum is σ = 1602076044. Its totient is φ = 269114880.

The previous prime is 672787519. The next prime is 672787523. The reversal of 672787520 is 25787276.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165276736 + 507510784 = 12856^2 + 22528^2 .

It is not an unprimeable number, because it can be changed into a prime (672787523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1050911 + ... + 1051550.

Almost surely, 2^672787520 is an apocalyptic number.

It is an amenable number.

672787520 is an abundant number, since it is smaller than the sum of its proper divisors (929288524).

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

672787520 is a wasteful number, since it uses less digits than its factorization.

672787520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102478 (or 2102468 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 672787520 is about 25938.1479678099. The cubic root of 672787520 is about 876.2458530277.

The spelling of 672787520 in words is "six hundred seventy-two million, seven hundred eighty-seven thousand, five hundred twenty".