260808641 has 2 divisors, whose sum is σ = 260808642. Its totient is φ = 260808640.

The previous prime is 260808637. The next prime is 260808683. The reversal of 260808641 is 146808062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253733041 + 7075600 = 15929^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 260808641 - 2² = 260808637 is a prime.

It is a super-2 number, since 2×260808641² = 136042294440533762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260808241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130404320 + 130404321.

It is an arithmetic number, because the mean of its divisors is an integer number (130404321).

Almost surely, 2^260808641 is an apocalyptic number.

It is an amenable number.

260808641 is a deficient number, since it is larger than the sum of its proper divisors (1).

260808641 is an equidigital number, since it uses as much as digits as its factorization.

260808641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 260808641 is about 16149.5709230927. The cubic root of 260808641 is about 638.9114315804.

The spelling of 260808641 in words is "two hundred sixty million, eight hundred eight thousand, six hundred forty-one".