63704245609 has 9 divisors (see below), whose sum is σ = 63968077693. Its totient is φ = 63441500332.

The previous prime is 63704245603. The next prime is 63704245637. The reversal of 63704245609 is 90654240736.

The square root of 63704245609 is 252397.

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

63704245609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63704245609 - 2³ = 63704245601 is a prime.

It is a super-2 number, since 2×63704245609² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63704245601) 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, 96667722 + ... + 96668380.

Almost surely, 2^63704245609 is an apocalyptic number.

63704245609 is the 252397-th square number.

63704245609 is the 126199-th centered octagonal number.

It is an amenable number.

63704245609 is a deficient number, since it is larger than the sum of its proper divisors (263832084).

63704245609 is an frugal number, since it uses more digits than its factorization.

63704245609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 63704245609 in words is "sixty-three billion, seven hundred four million, two hundred forty-five thousand, six hundred nine".