2660898990 has 32 divisors (see below), whose sum is σ = 6761815200. Its totient is φ = 667833344.

The previous prime is 2660898971. The next prime is 2660898991. The reversal of 2660898990 is 998980662.

2660898990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2660898990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660898991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2608215 + ... + 2609234.

It is an arithmetic number, because the mean of its divisors is an integer number (211306725).

Almost surely, 2^2660898990 is an apocalyptic number.

2660898990 is an abundant number, since it is smaller than the sum of its proper divisors (4100916210).

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

2660898990 is a wasteful number, since it uses less digits than its factorization.

2660898990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217476.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 2660898990 is about 51583.9024308941. The cubic root of 2660898990 is about 1385.7220561286.

The spelling of 2660898990 in words is "two billion, six hundred sixty million, eight hundred ninety-eight thousand, nine hundred ninety".