997679894 has 16 divisors (see below), whose sum is σ = 1532805120. Its totient is φ = 486767400.

The previous prime is 997679849. The next prime is 997679941. The reversal of 997679894 is 498976799.

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, 93947 + ... + 104025.

It is an arithmetic number, because the mean of its divisors is an integer number (95800320).

Almost surely, 2^997679894 is an apocalyptic number.

997679894 is a deficient number, since it is larger than the sum of its proper divisors (535125226).

997679894 is a wasteful number, since it uses less digits than its factorization.

997679894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11275.

The product of its digits is 61725888, while the sum is 68.

The square root of 997679894 is about 31586.0712023512. The cubic root of 997679894 is about 999.2260324621.

The spelling of 997679894 in words is "nine hundred ninety-seven million, six hundred seventy-nine thousand, eight hundred ninety-four".