1065656656 has 40 divisors (see below), whose sum is σ = 2104981344. Its totient is φ = 522537600.

The previous prime is 1065656633. The next prime is 1065656663. The reversal of 1065656656 is 6566565601.

It is a super-2 number, since 2×1065656656² = 2271248216954204672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169831 + ... + 175993.

Almost surely, 2^1065656656 is an apocalyptic number.

1065656656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1065656656 is a deficient number, since it is larger than the sum of its proper divisors (1039324688).

1065656656 is a wasteful number, since it uses less digits than its factorization.

1065656656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 1065656656 is about 32644.3970077562. The cubic root of 1065656656 is about 1021.4233160583.

It can be divided in two parts, 1065 and 656656, that added together give a square (657721 = 811²).

The spelling of 1065656656 in words is "one billion, sixty-five million, six hundred fifty-six thousand, six hundred fifty-six".