2660855808 has 104 divisors (see below), whose sum is σ = 7640957968. Its totient is φ = 818675712.

The previous prime is 2660855803. The next prime is 2660855819. The reversal of 2660855808 is 8085580662.

It is a tau number, because it is divible by the number of its divisors (104).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660855803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151416 + ... + 168072.

Almost surely, 2^2660855808 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 2660855808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3820478984).

2660855808 is an abundant number, since it is smaller than the sum of its proper divisors (4980102160).

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

2660855808 is a wasteful number, since it uses less digits than its factorization.

2660855808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16697 (or 16675 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The square root of 2660855808 is about 51583.4838683856. The cubic root of 2660855808 is about 1385.7145600939.

The spelling of 2660855808 in words is "two billion, six hundred sixty million, eight hundred fifty-five thousand, eight hundred eight".