6690837888 has 480 divisors, whose sum is σ = 23398993800. Its totient is φ = 1833431040.

The previous prime is 6690837871. The next prime is 6690837941. The reversal of 6690837888 is 8887380966.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 113404003 + ... + 113404061.

Almost surely, 2^6690837888 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 6690837888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11699496900).

6690837888 is an abundant number, since it is smaller than the sum of its proper divisors (16708155912).

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

6690837888 is an equidigital number, since it uses as much as digits as its factorization.

6690837888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The square root of 6690837888 is about 81797.5420657614. The cubic root of 6690837888 is about 1884.3439133078.

The spelling of 6690837888 in words is "six billion, six hundred ninety million, eight hundred thirty-seven thousand, eight hundred eighty-eight".