1056897664 has 32 divisors (see below), whose sum is σ = 2136981600. Its totient is φ = 520557312.

The previous prime is 1056897661. The next prime is 1056897697. The reversal of 1056897664 is 4667986501.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1056897664² = 2234065344337313792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056897661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53044 + ... + 70195.

It is an arithmetic number, because the mean of its divisors is an integer number (66780675).

Almost surely, 2^1056897664 is an apocalyptic number.

It is an amenable number.

1056897664 is an abundant number, since it is smaller than the sum of its proper divisors (1080083936).

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

1056897664 is an equidigital number, since it uses as much as digits as its factorization.

1056897664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123320 (or 123308 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1056897664 is about 32509.9625345831. The cubic root of 1056897664 is about 1018.6171392396.

The spelling of 1056897664 in words is "one billion, fifty-six million, eight hundred ninety-seven thousand, six hundred sixty-four".