696932780625 has 45 divisors (see below), whose sum is σ = 1258061204829. Its totient is φ = 371664090000.

The previous prime is 696932780617. The next prime is 696932780627. The reversal of 696932780625 is 526087239696.

The square root of 696932780625 is 834825.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54639530001 + 642293250624 = 233751^2 + 801432^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 696932780625 - 2³ = 696932780617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (696932780627) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 62606310 + ... + 62617440.

Almost surely, 2^696932780625 is an apocalyptic number.

696932780625 is the 834825-th square number.

696932780625 is the 417413-rd centered octagonal number.

It is an amenable number.

696932780625 is a deficient number, since it is larger than the sum of its proper divisors (561128424204).

696932780625 is an frugal number, since it uses more digits than its factorization.

696932780625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22288 (or 11139 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 696932780625 in words is "six hundred ninety-six billion, nine hundred thirty-two million, seven hundred eighty thousand, six hundred twenty-five".