63604335601 has 9 divisors (see below), whose sum is σ = 64231575499. Its totient is φ = 62983169464.

The previous prime is 63604335581. The next prime is 63604335629. The reversal of 63604335601 is 10653340636.

The square root of 63604335601 is 252199.

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., 11563776225 + 52040559376 = 107535^2 + 228124^2 .

It is not a de Polignac number, because 63604335601 - 2⁵ = 63604335569 is a prime.

It is a super-3 number, since 3×63604335601³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63604333601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26984115 + ... + 26986471.

Almost surely, 2^63604335601 is an apocalyptic number.

63604335601 is the 252199-th square number.

63604335601 is the 126100-th centered octagonal number.

It is an amenable number.

63604335601 is a deficient number, since it is larger than the sum of its proper divisors (627239898).

63604335601 is an frugal number, since it uses more digits than its factorization.

63604335601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928 (or 2464 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 63604335601 in words is "sixty-three billion, six hundred four million, three hundred thirty-five thousand, six hundred one".