5866638840 has 160 divisors (see below), whose sum is σ = 19753066080. Its totient is φ = 1561690368.

The previous prime is 5866638809. The next prime is 5866638853. The reversal of 5866638840 is 488366685.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2406102 + ... + 2408538.

It is an arithmetic number, because the mean of its divisors is an integer number (123456663).

Almost surely, 2^5866638840 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 5866638840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9876533040).

5866638840 is an abundant number, since it is smaller than the sum of its proper divisors (13886427240).

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

5866638840 is a wasteful number, since it uses less digits than its factorization.

5866638840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203 (or 3190 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The square root of 5866638840 is about 76593.9869702577. The cubic root of 5866638840 is about 1803.5566344555.

The spelling of 5866638840 in words is "five billion, eight hundred sixty-six million, six hundred thirty-eight thousand, eight hundred forty".