2656488645 has 24 divisors (see below), whose sum is σ = 4702553856. Its totient is φ = 1386648288.

The previous prime is 2656488641. The next prime is 2656488647. The reversal of 2656488645 is 5468846562.

It is not a de Polignac number, because 2656488645 - 2² = 2656488641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2656488591 and 2656488600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656488641) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 625897 + ... + 630126.

It is an arithmetic number, because the mean of its divisors is an integer number (195939744).

Almost surely, 2^2656488645 is an apocalyptic number.

It is an amenable number.

2656488645 is a deficient number, since it is larger than the sum of its proper divisors (2046065211).

2656488645 is a wasteful number, since it uses less digits than its factorization.

2656488645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256081 (or 1256078 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The square root of 2656488645 is about 51541.1354647916. The cubic root of 2656488645 is about 1384.9560378249.

The spelling of 2656488645 in words is "two billion, six hundred fifty-six million, four hundred eighty-eight thousand, six hundred forty-five".