5621666424 has 64 divisors (see below), whose sum is σ = 15339456000. Its totient is φ = 1702686720.

The previous prime is 5621666411. The next prime is 5621666431. The reversal of 5621666424 is 4246661265.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705937 + ... + 713855.

It is an arithmetic number, because the mean of its divisors is an integer number (239679000).

Almost surely, 2^5621666424 is an apocalyptic number.

It is an amenable number.

5621666424 is an abundant number, since it is smaller than the sum of its proper divisors (9717789576).

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

5621666424 is a wasteful number, since it uses less digits than its factorization.

5621666424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10628 (or 10624 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 5621666424 is about 74977.7728663635. The cubic root of 5621666424 is about 1778.0952591412.

The spelling of 5621666424 in words is "five billion, six hundred twenty-one million, six hundred sixty-six thousand, four hundred twenty-four".