997109576 has 16 divisors (see below), whose sum is σ = 1874793600. Its totient is φ = 497164624.

The previous prime is 997109557. The next prime is 997109609. The reversal of 997109576 is 675901799.

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, 170720 + ... + 176463.

It is an arithmetic number, because the mean of its divisors is an integer number (117174600).

Almost surely, 2^997109576 is an apocalyptic number.

It is an amenable number.

997109576 is a deficient number, since it is larger than the sum of its proper divisors (877684024).

997109576 is a wasteful number, since it uses less digits than its factorization.

997109576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347548 (or 347544 counting only the distinct ones).

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 997109576 is about 31577.0419133902. The cubic root of 997109576 is about 999.0355955564.

The spelling of 997109576 in words is "nine hundred ninety-seven million, one hundred nine thousand, five hundred seventy-six".