1056560663 has 4 divisors (see below), whose sum is σ = 1056634488. Its totient is φ = 1056486840.

The previous prime is 1056560657. The next prime is 1056560711. The reversal of 1056560663 is 3660656501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3660656501 = 107 ⋅34211743.

It is a cyclic number.

It is not a de Polignac number, because 1056560663 - 2¹⁶ = 1056495127 is a prime.

It is a super-2 number, since 2×1056560663² = 2232640869197999138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056560633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7781 + ... + 46622.

It is an arithmetic number, because the mean of its divisors is an integer number (264158622).

Almost surely, 2^1056560663 is an apocalyptic number.

1056560663 is a deficient number, since it is larger than the sum of its proper divisors (73825).

1056560663 is an equidigital number, since it uses as much as digits as its factorization.

1056560663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73824.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 1056560663 is about 32504.7790793908. The cubic root of 1056560663 is about 1018.5088627564.

The spelling of 1056560663 in words is "one billion, fifty-six million, five hundred sixty thousand, six hundred sixty-three".