1005605056 has 14 divisors (see below), whose sum is σ = 1995497660. Its totient is φ = 502802496.

The previous prime is 1005605053. The next prime is 1005605087. The reversal of 1005605056 is 6505065001.

It is a super-2 number, since 2×1005605056² = 2022483057305526272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005605053) by changing a digit.

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 as a sum of consecutive naturals, namely, 7856226 + ... + 7856353.

Almost surely, 2^1005605056 is an apocalyptic number.

1005605056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1005605056 is a deficient number, since it is larger than the sum of its proper divisors (989892604).

1005605056 is an equidigital number, since it uses as much as digits as its factorization.

1005605056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712591 (or 15712581 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1005605056 is about 31711.2764801419. The cubic root of 1005605056 is about 1001.8648720902.

The spelling of 1005605056 in words is "one billion, five million, six hundred five thousand, fifty-six".