997500164 has 24 divisors (see below), whose sum is σ = 1763586048. Its totient is φ = 493637760.

The previous prime is 997500157. The next prime is 997500167. The reversal of 997500164 is 461005799.

It is not an unprimeable number, because it can be changed into a prime (997500167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233084 + ... + 237324.

It is an arithmetic number, because the mean of its divisors is an integer number (73482752).

Almost surely, 2^997500164 is an apocalyptic number.

It is an amenable number.

997500164 is a deficient number, since it is larger than the sum of its proper divisors (766085884).

997500164 is a wasteful number, since it uses less digits than its factorization.

997500164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4835 (or 4833 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 997500164 is about 31583.2259910225. The cubic root of 997500164 is about 999.1660260141.

The spelling of 997500164 in words is "nine hundred ninety-seven million, five hundred thousand, one hundred sixty-four".