5986664640 has 392 divisors, whose sum is σ = 23326910928. Its totient is φ = 1450690560.

The previous prime is 5986664633. The next prime is 5986664653. The reversal of 5986664640 is 464666895.

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

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2564914 + ... + 2567246.

Almost surely, 2^5986664640 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 5986664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11663455464).

5986664640 is an abundant number, since it is smaller than the sum of its proper divisors (17340246288).

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

5986664640 is a wasteful number, since it uses less digits than its factorization.

5986664640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The square root of 5986664640 is about 77373.5396631174. The cubic root of 5986664640 is about 1815.7733743991.

It can be divided in two parts, 598666 and 4640, that added together give a palindrome (603306).

The spelling of 5986664640 in words is "five billion, nine hundred eighty-six million, six hundred sixty-four thousand, six hundred forty".