997546372 has 24 divisors (see below), whose sum is σ = 1771473816. Its totient is φ = 491463168.

The previous prime is 997546369. The next prime is 997546399. The reversal of 997546372 is 273645799.

It can be written as a sum of positive squares in 4 ways, for example, as 115218756 + 882327616 = 10734^2 + 29704^2 .

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, 71818 + ... + 84574.

It is an arithmetic number, because the mean of its divisors is an integer number (73811409).

Almost surely, 2^997546372 is an apocalyptic number.

It is an amenable number.

997546372 is a deficient number, since it is larger than the sum of its proper divisors (773927444).

997546372 is a wasteful number, since it uses less digits than its factorization.

997546372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13047 (or 13045 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 52.

The square root of 997546372 is about 31583.9575101031. The cubic root of 997546372 is about 999.1814541655.

The spelling of 997546372 in words is "nine hundred ninety-seven million, five hundred forty-six thousand, three hundred seventy-two".