6663613504 has 28 divisors (see below), whose sum is σ = 13679081100. Its totient is φ = 3216915968.

The previous prime is 6663613493. The next prime is 6663613513. The reversal of 6663613504 is 4053163666.

It can be written as a sum of positive squares in 2 ways, for example, as 3677209600 + 2986403904 = 60640^2 + 54648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793299 + ... + 1797010.

Almost surely, 2^6663613504 is an apocalyptic number.

6663613504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6663613504 is an abundant number, since it is smaller than the sum of its proper divisors (7015467596).

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

6663613504 is a wasteful number, since it uses less digits than its factorization.

6663613504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590350 (or 3590340 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 6663613504 is about 81630.9592250391. The cubic root of 6663613504 is about 1881.7847002830.

The spelling of 6663613504 in words is "six billion, six hundred sixty-three million, six hundred thirteen thousand, five hundred four".