1056688620 has 96 divisors (see below), whose sum is σ = 3198720000. Its totient is φ = 259096320.

The previous prime is 1056688597. The next prime is 1056688627. The reversal of 1056688620 is 268866501.

It is a super-2 number, since 2×1056688620² = 2233181679275008800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056688627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208881 + ... + 213879.

It is an arithmetic number, because the mean of its divisors is an integer number (33320000).

Almost surely, 2^1056688620 is an apocalyptic number.

1056688620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1056688620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599360000).

1056688620 is an abundant number, since it is smaller than the sum of its proper divisors (2142031380).

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

1056688620 is a wasteful number, since it uses less digits than its factorization.

1056688620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295 (or 5293 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1056688620 is about 32506.7472995992. The cubic root of 1056688620 is about 1018.5499773156.

The spelling of 1056688620 in words is "one billion, fifty-six million, six hundred eighty-eight thousand, six hundred twenty".