2656497888 has 108 divisors (see below), whose sum is σ = 8303723064. Its totient is φ = 804988800.

The previous prime is 2656497887. The next prime is 2656497913. The reversal of 2656497888 is 8887946562.

2656497888 is a `hidden beast` number, since 2 + 65 + 6 + 497 + 8 + 88 = 666.

2656497888 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656497887) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3268 + ... + 72963.

Almost surely, 2^2656497888 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 2656497888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4151861532).

2656497888 is an abundant number, since it is smaller than the sum of its proper divisors (5647225176).

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

2656497888 is a wasteful number, since it uses less digits than its factorization.

2656497888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76269 (or 76247 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The square root of 2656497888 is about 51541.2251309571. The cubic root of 2656497888 is about 1384.9576440973.

The spelling of 2656497888 in words is "two billion, six hundred fifty-six million, four hundred ninety-seven thousand, eight hundred eighty-eight".