997180608 has 28 divisors (see below), whose sum is σ = 2638374200. Its totient is φ = 332393472.

The previous prime is 997180589. The next prime is 997180643. The reversal of 997180608 is 806081799.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596633 + ... + 2597016.

It is an arithmetic number, because the mean of its divisors is an integer number (94227650).

Almost surely, 2^997180608 is an apocalyptic number.

It is an amenable number.

997180608 is an abundant number, since it is smaller than the sum of its proper divisors (1641193592).

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

997180608 is a wasteful number, since it uses less digits than its factorization.

997180608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193664 (or 5193654 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 997180608 is about 31578.1666345594. The cubic root of 997180608 is about 999.0593180616.

The spelling of 997180608 in words is "nine hundred ninety-seven million, one hundred eighty thousand, six hundred eight".