5665652240 has 80 divisors (see below), whose sum is σ = 13538977200. Its totient is φ = 2203607040.

The previous prime is 5665652227. The next prime is 5665652257. The reversal of 5665652240 is 422565665.

It can be written as a sum of positive squares in 8 ways, for example, as 3228057856 + 2437594384 = 56816^2 + 49372^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 1037036 + ... + 1042484.

It is an arithmetic number, because the mean of its divisors is an integer number (169237215).

Almost surely, 2^5665652240 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 5665652240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6769488600).

5665652240 is an abundant number, since it is smaller than the sum of its proper divisors (7873324960).

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

5665652240 is a wasteful number, since it uses less digits than its factorization.

5665652240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The square root of 5665652240 is about 75270.5270341586. The cubic root of 5665652240 is about 1782.7206889271.

The spelling of 5665652240 in words is "five billion, six hundred sixty-five million, six hundred fifty-two thousand, two hundred forty".