897764913 has 12 divisors (see below), whose sum is σ = 1305361408. Its totient is φ = 594545400.

The previous prime is 897764909. The next prime is 897764921. The reversal of 897764913 is 319467798.

It is a happy number.

897764913 is a `hidden beast` number, since 89 + 7 + 76 + 491 + 3 = 666.

It is not a de Polignac number, because 897764913 - 2² = 897764909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897764913.

It is not an unprimeable number, because it can be changed into a prime (897764213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328945 + ... + 331662.

Almost surely, 2^897764913 is an apocalyptic number.

It is an amenable number.

897764913 is a deficient number, since it is larger than the sum of its proper divisors (407596495).

897764913 is a wasteful number, since it uses less digits than its factorization.

897764913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660764 (or 660761 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 897764913 is about 29962.7253933950. The cubic root of 897764913 is about 964.6894803035.

The spelling of 897764913 in words is "eight hundred ninety-seven million, seven hundred sixty-four thousand, nine hundred thirteen".