6888190464 has 120 divisors (see below), whose sum is σ = 19957277340. Its totient is φ = 2287116288.

The previous prime is 6888190369. The next prime is 6888190513. The reversal of 6888190464 is 4640918886.

It can be written as a sum of positive squares in 2 ways, for example, as 6887672064 + 518400 = 82992^2 + 720^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6888190464.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1236774 + ... + 1242330.

Almost surely, 2^6888190464 is an apocalyptic number.

6888190464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6888190464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9978638670).

6888190464 is an abundant number, since it is smaller than the sum of its proper divisors (13069086876).

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

6888190464 is a wasteful number, since it uses less digits than its factorization.

6888190464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850 (or 5831 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 6888190464 is about 82995.1231338324. The cubic root of 6888190464 is about 1902.6915191259.

The spelling of 6888190464 in words is "six billion, eight hundred eighty-eight million, one hundred ninety thousand, four hundred sixty-four".