5664451686 has 16 divisors (see below), whose sum is σ = 11331566400. Its totient is φ = 1887706728.

The previous prime is 5664451679. The next prime is 5664451699. The reversal of 5664451686 is 6861544665.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82756 + ... + 134823.

It is an arithmetic number, because the mean of its divisors is an integer number (708222900).

Almost surely, 2^5664451686 is an apocalyptic number.

5664451686 is an abundant number, since it is smaller than the sum of its proper divisors (5667114714).

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

5664451686 is a wasteful number, since it uses less digits than its factorization.

5664451686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221923.

The product of its digits is 4147200, while the sum is 51.

The square root of 5664451686 is about 75262.5516840879. The cubic root of 5664451686 is about 1782.5947602870.

The spelling of 5664451686 in words is "five billion, six hundred sixty-four million, four hundred fifty-one thousand, six hundred eighty-six".