2656083681 has 6 divisors (see below), whose sum is σ = 3836565330. Its totient is φ = 1770722448.

The previous prime is 2656083667. The next prime is 2656083707. The reversal of 2656083681 is 1863806562.

2656083681 is a `hidden beast` number, since 2 + 6 + 5 + 608 + 36 + 8 + 1 = 666.

2656083681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2623078656 + 33005025 = 51216^2 + 5745^2 .

It is not a de Polignac number, because 2656083681 - 2²² = 2651889377 is a prime.

It is a super-2 number, since 2×2656083681² = 14109561040949019522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2656083481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147560196 + ... + 147560213.

It is an arithmetic number, because the mean of its divisors is an integer number (639427555).

Almost surely, 2^2656083681 is an apocalyptic number.

It is an amenable number.

2656083681 is a deficient number, since it is larger than the sum of its proper divisors (1180481649).

2656083681 is a wasteful number, since it uses less digits than its factorization.

2656083681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295120415 (or 295120412 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2656083681 is about 51537.2067636577. The cubic root of 2656083681 is about 1384.8856584740.

The spelling of 2656083681 in words is "two billion, six hundred fifty-six million, eighty-three thousand, six hundred eighty-one".