997832816 has 20 divisors (see below), whose sum is σ = 2047025232. Its totient is φ = 469568256.

The previous prime is 997832807. The next prime is 997832821. The reversal of 997832816 is 618238799.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1833980 + ... + 1834523.

Almost surely, 2^997832816 is an apocalyptic number.

It is an amenable number.

997832816 is an abundant number, since it is smaller than the sum of its proper divisors (1049192416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997832816 is a wasteful number, since it uses less digits than its factorization.

997832816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668528 (or 3668522 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 997832816 is about 31588.4918285125. The cubic root of 997832816 is about 999.2770828501.

The spelling of 997832816 in words is "nine hundred ninety-seven million, eight hundred thirty-two thousand, eight hundred sixteen".