997599916 has 24 divisors (see below), whose sum is σ = 1852937856. Its totient is φ = 468330240.

The previous prime is 997599893. The next prime is 997599929. The reversal of 997599916 is 619995799.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11205 + ... + 46051.

It is an arithmetic number, because the mean of its divisors is an integer number (77205744).

Almost surely, 2^997599916 is an apocalyptic number.

It is an amenable number.

997599916 is a deficient number, since it is larger than the sum of its proper divisors (855337940).

997599916 is a wasteful number, since it uses less digits than its factorization.

997599916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35289 (or 35287 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 64.

The square root of 997599916 is about 31584.8051442462. The cubic root of 997599916 is about 999.1993311004.

The spelling of 997599916 in words is "nine hundred ninety-seven million, five hundred ninety-nine thousand, nine hundred sixteen".