2660704641 has 24 divisors (see below), whose sum is σ = 4394821184. Its totient is φ = 1519521120.

The previous prime is 2660704637. The next prime is 2660704661. The reversal of 2660704641 is 1464070662.

2660704641 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 7 + 0 + 4 + 641 = 666.

It is not a de Polignac number, because 2660704641 - 2² = 2660704637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2660704596 and 2660704605.

It is not an unprimeable number, because it can be changed into a prime (2660704661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106311 + ... + 128931.

Almost surely, 2^2660704641 is an apocalyptic number.

2660704641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2660704641 is a deficient number, since it is larger than the sum of its proper divisors (1734116543).

2660704641 is a wasteful number, since it uses less digits than its factorization.

2660704641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24501 (or 24498 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2660704641 is about 51582.0185820602. The cubic root of 2660704641 is about 1385.6883181258.

The spelling of 2660704641 in words is "two billion, six hundred sixty million, seven hundred four thousand, six hundred forty-one".