663693372 has 48 divisors (see below), whose sum is σ = 1723590400. Its totient is φ = 220857840.

The previous prime is 663693361. The next prime is 663693377. The reversal of 663693372 is 273396366.

663693372 is a `hidden beast` number, since 6 + 636 + 9 + 3 + 3 + 7 + 2 = 666.

663693372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663693377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63279 + ... + 73017.

Almost surely, 2^663693372 is an apocalyptic number.

It is an amenable number.

663693372 is an abundant number, since it is smaller than the sum of its proper divisors (1059897028).

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

663693372 is a wasteful number, since it uses less digits than its factorization.

663693372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10383 (or 10375 counting only the distinct ones).

The product of its digits is 734832, while the sum is 45.

The square root of 663693372 is about 25762.2470293257. The cubic root of 663693372 is about 872.2798231519.

The spelling of 663693372 in words is "six hundred sixty-three million, six hundred ninety-three thousand, three hundred seventy-two".