260664659 has 2 divisors, whose sum is σ = 260664660. Its totient is φ = 260664658.

The previous prime is 260664641. The next prime is 260664661. The reversal of 260664659 is 956466062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260664659 - 2⁸ = 260664403 is a prime.

Together with 260664661, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260664259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130332329 + 130332330.

It is an arithmetic number, because the mean of its divisors is an integer number (130332330).

Almost surely, 2^260664659 is an apocalyptic number.

260664659 is a deficient number, since it is larger than the sum of its proper divisors (1).

260664659 is an equidigital number, since it uses as much as digits as its factorization.

260664659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 260664659 is about 16145.1125421906. The cubic root of 260664659 is about 638.7938374714.

The spelling of 260664659 in words is "two hundred sixty million, six hundred sixty-four thousand, six hundred fifty-nine".