5666517920 has 96 divisors (see below), whose sum is σ = 15364339200. Its totient is φ = 1934585856.

The previous prime is 5666517919. The next prime is 5666517937. The reversal of 5666517920 is 297156665.

It is a happy number.

It is a super-2 number, since 2×5666517920² = 64218850675362252800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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, 257096 + ... + 278264.

It is an arithmetic number, because the mean of its divisors is an integer number (160045200).

Almost surely, 2^5666517920 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 5666517920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7682169600).

5666517920 is an abundant number, since it is smaller than the sum of its proper divisors (9697821280).

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

5666517920 is a wasteful number, since it uses less digits than its factorization.

5666517920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21430 (or 21422 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 5666517920 is about 75276.2772724582. The cubic root of 5666517920 is about 1782.8114808892.

The spelling of 5666517920 in words is "five billion, six hundred sixty-six million, five hundred seventeen thousand, nine hundred twenty".