6660575651 has 2 divisors, whose sum is σ = 6660575652. Its totient is φ = 6660575650.

The previous prime is 6660575641. The next prime is 6660575689. The reversal of 6660575651 is 1565750666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6660575651 - 2¹⁴ = 6660559267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6660575596 and 6660575605.

It is not a weakly prime, because it can be changed into another prime (6660575641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330287825 + 3330287826.

It is an arithmetic number, because the mean of its divisors is an integer number (3330287826).

Almost surely, 2^6660575651 is an apocalyptic number.

6660575651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660575651 is an equidigital number, since it uses as much as digits as its factorization.

6660575651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 6660575651 is about 81612.3498681419. The cubic root of 6660575651 is about 1881.4986965895.

The spelling of 6660575651 in words is "six billion, six hundred sixty million, five hundred seventy-five thousand, six hundred fifty-one".