1005520656 has 40 divisors (see below), whose sum is σ = 2968681024. Its totient is φ = 287291520.

The previous prime is 1005520651. The next prime is 1005520661. The reversal of 1005520656 is 6560255001.

It is an interprime number because it is at equal distance from previous prime (1005520651) and next prime (1005520661).

It is a super-2 number, since 2×1005520656² = 2022143579285340672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005520651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495975 + ... + 1496646.

Almost surely, 2^1005520656 is an apocalyptic number.

1005520656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1005520656 is an abundant number, since it is smaller than the sum of its proper divisors (1963160368).

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

1005520656 is a wasteful number, since it uses less digits than its factorization.

1005520656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992639 (or 2992633 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1005520656 is about 31709.9456953177. The cubic root of 1005520656 is about 1001.8368426101.

Adding to 1005520656 its reverse (6560255001), we get a palindrome (7565775657).

The spelling of 1005520656 in words is "one billion, five million, five hundred twenty thousand, six hundred fifty-six".