1056860640 has 144 divisors (see below), whose sum is σ = 3934462896. Its totient is φ = 256204800.

The previous prime is 1056860593. The next prime is 1056860653. The reversal of 1056860640 is 460686501.

1056860640 is a `hidden beast` number, since 1 + 0 + 5 + 6 + 8 + 6 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1056860640² = 2233908824762419200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1056860595 and 1056860604.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17521 + ... + 49200.

It is an arithmetic number, because the mean of its divisors is an integer number (27322659).

Almost surely, 2^1056860640 is an apocalyptic number.

1056860640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056860640 is an abundant number, since it is smaller than the sum of its proper divisors (2877602256).

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

1056860640 is a wasteful number, since it uses less digits than its factorization.

1056860640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66753 (or 66742 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1056860640 is about 32509.3931041476. The cubic root of 1056860640 is about 1018.6052447668.

The spelling of 1056860640 in words is "one billion, fifty-six million, eight hundred sixty thousand, six hundred forty".