2656006641 has 6 divisors (see below), whose sum is σ = 3836454050. Its totient is φ = 1770671088.

The previous prime is 2656006603. The next prime is 2656006657. The reversal of 2656006641 is 1466006562.

It is a happy number.

2656006641 is a `hidden beast` number, since 2 + 6 + 5 + 6 + 0 + 0 + 6 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2123366400 + 532640241 = 46080^2 + 23079^2 .

It is not a de Polignac number, because 2656006641 - 2¹⁰ = 2656005617 is a prime.

It is a super-2 number, since 2×2656006641² = 14108742554072205762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2656006596 and 2656006605.

It is not an unprimeable number, because it can be changed into a prime (2656006141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147555916 + ... + 147555933.

Almost surely, 2^2656006641 is an apocalyptic number.

It is an amenable number.

2656006641 is a deficient number, since it is larger than the sum of its proper divisors (1180447409).

2656006641 is a wasteful number, since it uses less digits than its factorization.

2656006641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295111855 (or 295111852 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2656006641 is about 51536.4593370557. The cubic root of 2656006641 is about 1384.8722687575.

The spelling of 2656006641 in words is "two billion, six hundred fifty-six million, six thousand, six hundred forty-one".