5566637640 has 64 divisors (see below), whose sum is σ = 16847740800. Its totient is φ = 1471296512.

The previous prime is 5566637633. The next prime is 5566637683. The reversal of 5566637640 is 467366655.

It is a self number, because there is not a number n which added to its sum of digits gives 5566637640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191700 + ... + 218819.

It is an arithmetic number, because the mean of its divisors is an integer number (263245950).

Almost surely, 2^5566637640 is an apocalyptic number.

It is an amenable number.

5566637640 is an abundant number, since it is smaller than the sum of its proper divisors (11281103160).

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

5566637640 is a wasteful number, since it uses less digits than its factorization.

5566637640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410646 (or 410642 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 48.

The square root of 5566637640 is about 74609.9030960368. The cubic root of 5566637640 is about 1772.2744803238.

The spelling of 5566637640 in words is "five billion, five hundred sixty-six million, six hundred thirty-seven thousand, six hundred forty".