5661633654 has 24 divisors (see below), whose sum is σ = 12302035200. Its totient is φ = 1881801648.

The previous prime is 5661633619. The next prime is 5661633673. The reversal of 5661633654 is 4563361665.

5661633654 is a `hidden beast` number, since 5 + 6 + 6 + 1 + 633 + 6 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 444342 + ... + 456905.

It is an arithmetic number, because the mean of its divisors is an integer number (512584800).

Almost surely, 2^5661633654 is an apocalyptic number.

5661633654 is an abundant number, since it is smaller than the sum of its proper divisors (6640401546).

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

5661633654 is a wasteful number, since it uses less digits than its factorization.

5661633654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901604 (or 901601 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 5661633654 is about 75243.8280126683. The cubic root of 5661633654 is about 1782.2991010525.

The spelling of 5661633654 in words is "five billion, six hundred sixty-one million, six hundred thirty-three thousand, six hundred fifty-four".