897987976 has 16 divisors (see below), whose sum is σ = 1701086940. Its totient is φ = 444364800.

The previous prime is 897987967. The next prime is 897987997. The reversal of 897987976 is 679789798.

It can be written as a sum of positive squares in 2 ways, for example, as 763195876 + 134792100 = 27626^2 + 11610^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577825 + ... + 579376.

Almost surely, 2^897987976 is an apocalyptic number.

It is an amenable number.

897987976 is a deficient number, since it is larger than the sum of its proper divisors (803098964).

897987976 is a wasteful number, since it uses less digits than its factorization.

897987976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157304 (or 1157300 counting only the distinct ones).

The product of its digits is 96018048, while the sum is 70.

The square root of 897987976 is about 29966.4475038333. The cubic root of 897987976 is about 964.7693708208.

The spelling of 897987976 in words is "eight hundred ninety-seven million, nine hundred eighty-seven thousand, nine hundred seventy-six".