756564740 has 24 divisors (see below), whose sum is σ = 1604520792. Its totient is φ = 299628800.

The previous prime is 756564709. The next prime is 756564803. The reversal of 756564740 is 47465657.

It can be written as a sum of positive squares in 4 ways, for example, as 372953344 + 383611396 = 19312^2 + 19586^2 .

It is a super-2 number, since 2×756564740² = 1144780411622535200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 756564691 and 756564700.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185249 + ... + 189288.

It is an arithmetic number, because the mean of its divisors is an integer number (66855033).

Almost surely, 2^756564740 is an apocalyptic number.

It is an amenable number.

756564740 is an abundant number, since it is smaller than the sum of its proper divisors (847956052).

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

756564740 is a wasteful number, since it uses less digits than its factorization.

756564740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374647 (or 374645 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The square root of 756564740 is about 27505.7219501688. The cubic root of 756564740 is about 911.2034715126.

The spelling of 756564740 in words is "seven hundred fifty-six million, five hundred sixty-four thousand, seven hundred forty".