997636472 has 48 divisors (see below), whose sum is σ = 2179039320. Its totient is φ = 426955200.

The previous prime is 997636463. The next prime is 997636529. The reversal of 997636472 is 274636799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379322 + ... + 381942.

Almost surely, 2^997636472 is an apocalyptic number.

It is an amenable number.

997636472 is an abundant number, since it is smaller than the sum of its proper divisors (1181402848).

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

997636472 is a wasteful number, since it uses less digits than its factorization.

997636472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3601 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 53.

The square root of 997636472 is about 31585.3838349323. The cubic root of 997636472 is about 999.2115358210.

The spelling of 997636472 in words is "nine hundred ninety-seven million, six hundred thirty-six thousand, four hundred seventy-two".