5646868864 has 256 divisors, whose sum is σ = 14582736000. Its totient is φ = 2118057984.

The previous prime is 5646868841. The next prime is 5646868879. The reversal of 5646868864 is 4688686465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24658702 + ... + 24658930.

Almost surely, 2^5646868864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5646868864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7291368000).

5646868864 is an abundant number, since it is smaller than the sum of its proper divisors (8935867136).

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

5646868864 is a wasteful number, since it uses less digits than its factorization.

5646868864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 353 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 61.

The square root of 5646868864 is about 75145.6509985774. The cubic root of 5646868864 is about 1780.7484190213.

The spelling of 5646868864 in words is "five billion, six hundred forty-six million, eight hundred sixty-eight thousand, eight hundred sixty-four".