897456864964 has 135 divisors (see below), whose sum is σ = 1846592034721. Its totient is φ = 381361995520.

The previous prime is 897456864923. The next prime is 897456864973. The reversal of 897456864964 is 469468654798.

The square root of 897456864964 is 947342.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 311987039364 + 585469825600 = 558558^2 + 765160^2 .

It is a super-2 number, since 2×897456864964² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 6023200362 + ... + 6023200510.

Almost surely, 2^897456864964 is an apocalyptic number.

897456864964 is the 947342-nd square number.

It is an amenable number.

897456864964 is an abundant number, since it is smaller than the sum of its proper divisors (949135169757).

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

897456864964 is an equidigital number, since it uses as much as digits as its factorization.

897456864964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 179 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 76.

The spelling of 897456864964 in words is "eight hundred ninety-seven billion, four hundred fifty-six million, eight hundred sixty-four thousand, nine hundred sixty-four".