997345912 has 32 divisors (see below), whose sum is σ = 1920639600. Its totient is φ = 485344000.

The previous prime is 997345883. The next prime is 997345927. The reversal of 997345912 is 219543799.

It is a super-2 number, since 2×997345912² = 1989397736366223488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37212 + ... + 58132.

Almost surely, 2^997345912 is an apocalyptic number.

It is an amenable number.

997345912 is a deficient number, since it is larger than the sum of its proper divisors (923293688).

997345912 is a wasteful number, since it uses less digits than its factorization.

997345912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21087 (or 21083 counting only the distinct ones).

The product of its digits is 612360, while the sum is 49.

The square root of 997345912 is about 31580.7839041402. The cubic root of 997345912 is about 999.1145201569.

The spelling of 997345912 in words is "nine hundred ninety-seven million, three hundred forty-five thousand, nine hundred twelve".