897730977 has 16 divisors (see below), whose sum is σ = 1406236608. Its totient is φ = 502226880.

The previous prime is 897730969. The next prime is 897730979. The reversal of 897730977 is 779037798.

It is not a de Polignac number, because 897730977 - 2³ = 897730969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897730979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045878 + ... + 1046735.

It is an arithmetic number, because the mean of its divisors is an integer number (87889788).

Almost surely, 2^897730977 is an apocalyptic number.

It is an amenable number.

897730977 is a deficient number, since it is larger than the sum of its proper divisors (508505631).

897730977 is a wasteful number, since it uses less digits than its factorization.

897730977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092640.

The product of its (nonzero) digits is 4667544, while the sum is 57.

The square root of 897730977 is about 29962.1590844185. The cubic root of 897730977 is about 964.6773248887.

The spelling of 897730977 in words is "eight hundred ninety-seven million, seven hundred thirty thousand, nine hundred seventy-seven".