2631663408 has 80 divisors (see below), whose sum is σ = 7655795712. Its totient is φ = 771744000.

The previous prime is 2631663407. The next prime is 2631663413. The reversal of 2631663408 is 8043661362.

It is not an unprimeable number, because it can be changed into a prime (2631663407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64023 + ... + 96758.

Almost surely, 2^2631663408 is an apocalyptic number.

It is an amenable number.

2631663408 is an abundant number, since it is smaller than the sum of its proper divisors (5024132304).

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

2631663408 is a wasteful number, since it uses less digits than its factorization.

2631663408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160834 (or 160828 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 2631663408 is about 51299.7408180587. The cubic root of 2631663408 is about 1380.6283297079.

The spelling of 2631663408 in words is "two billion, six hundred thirty-one million, six hundred sixty-three thousand, four hundred eight".