1056663 has 12 divisors (see below), whose sum is σ = 1541280. Its totient is φ = 697536.

The previous prime is 1056659. The next prime is 1056667. The reversal of 1056663 is 3666501.

It is an interprime number because it is at equal distance from previous prime (1056659) and next prime (1056667).

It is not a de Polignac number, because 1056663 - 2² = 1056659 is a prime.

It is a super-2 number, since 2×1056663² = 2233073391138, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (128440).

2^1056663 is an apocalyptic number.

1056663 is a deficient number, since it is larger than the sum of its proper divisors (484617).

1056663 is a wasteful number, since it uses less digits than its factorization.

1056663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1056663 is about 1027.9411461752. The cubic root of 1056663 is about 101.8541745480.

The spelling of 1056663 in words is "one million, fifty-six thousand, six hundred sixty-three".