207700770564 has 135 divisors (see below), whose sum is σ = 631793815653. Its totient is φ = 59326670592.

The previous prime is 207700770553. The next prime is 207700770577. The reversal of 207700770564 is 465077007702.

The square root of 207700770564 is 455742.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1032336900 + 206668433664 = 32130^2 + 454608^2 .

It is a super-2 number, since 2×207700770564² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 57421684 + ... + 57425300.

Almost surely, 2^207700770564 is an apocalyptic number.

207700770564 is the 455742-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207700770564

207700770564 is an abundant number, since it is smaller than the sum of its proper divisors (424093045089).

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

207700770564 is an frugal number, since it uses more digits than its factorization.

207700770564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 45.

The spelling of 207700770564 in words is "two hundred seven billion, seven hundred million, seven hundred seventy thousand, five hundred sixty-four".