3695302521 has 27 divisors (see below), whose sum is σ = 5586162127. Its totient is φ = 2353750080.

The previous prime is 3695302519. The next prime is 3695302531. The reversal of 3695302521 is 1252035963.

The square root of 3695302521 is 60789.

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., 648262521 + 3047040000 = 25461^2 + 55200^2 .

It is not a de Polignac number, because 3695302521 - 2¹ = 3695302519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3695302531) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4194001 + ... + 4194881.

Almost surely, 2^3695302521 is an apocalyptic number.

3695302521 is the 60789-th square number.

3695302521 is the 30395-th centered octagonal number.

It is an amenable number.

3695302521 is a deficient number, since it is larger than the sum of its proper divisors (1890859606).

3695302521 is an frugal number, since it uses more digits than its factorization.

3695302521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The cubic root of 3695302521 is about 1546.0255471524.

Multiplying 3695302521 by its sum of digits (36), we get a square (133030890756 = 364734²).

The spelling of 3695302521 in words is "three billion, six hundred ninety-five million, three hundred two thousand, five hundred twenty-one".