997353698 has 16 divisors (see below), whose sum is σ = 1643950944. Its totient is φ = 450032160.

The previous prime is 997353593. The next prime is 997353727. The reversal of 997353698 is 896353799.

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, 162440 + ... + 168467.

It is an arithmetic number, because the mean of its divisors is an integer number (102746934).

Almost surely, 2^997353698 is an apocalyptic number.

997353698 is a deficient number, since it is larger than the sum of its proper divisors (646597246).

997353698 is a wasteful number, since it uses less digits than its factorization.

997353698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331057.

The product of its digits is 11022480, while the sum is 59.

The square root of 997353698 is about 31580.9071750639. The cubic root of 997353698 is about 999.1171200858.

The spelling of 997353698 in words is "nine hundred ninety-seven million, three hundred fifty-three thousand, six hundred ninety-eight".