6890598990 has 256 divisors, whose sum is σ = 20849633280. Its totient is φ = 1604736000.

The previous prime is 6890598989. The next prime is 6890599013. The reversal of 6890598990 is 998950986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8645272 + ... + 8646068.

It is an arithmetic number, because the mean of its divisors is an integer number (81443880).

Almost surely, 2^6890598990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6890598990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10424816640).

6890598990 is an abundant number, since it is smaller than the sum of its proper divisors (13959034290).

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

6890598990 is a wasteful number, since it uses less digits than its factorization.

6890598990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 63.

The square root of 6890598990 is about 83009.6319110017. The cubic root of 6890598990 is about 1902.9132584440.

The spelling of 6890598990 in words is "six billion, eight hundred ninety million, five hundred ninety-eight thousand, nine hundred ninety".