997480816 has 20 divisors (see below), whose sum is σ = 1933170912. Its totient is φ = 498598016.

The previous prime is 997480801. The next prime is 997480823. The reversal of 997480816 is 618084799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70185 + ... + 83191.

Almost surely, 2^997480816 is an apocalyptic number.

It is an amenable number.

997480816 is a deficient number, since it is larger than the sum of its proper divisors (935690096).

997480816 is a wasteful number, since it uses less digits than its factorization.

997480816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17808 (or 17802 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 997480816 is about 31582.9196877046. The cubic root of 997480816 is about 999.1595658683.

The spelling of 997480816 in words is "nine hundred ninety-seven million, four hundred eighty thousand, eight hundred sixteen".