260455649 has 2 divisors, whose sum is σ = 260455650. Its totient is φ = 260455648.

The previous prime is 260455639. The next prime is 260455697. The reversal of 260455649 is 946554062.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167236624 + 93219025 = 12932^2 + 9655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260455649 is a prime.

It is a super-2 number, since 2×260455649² = 135674290192022402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260455639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130227824 + 130227825.

It is an arithmetic number, because the mean of its divisors is an integer number (130227825).

Almost surely, 2^260455649 is an apocalyptic number.

It is an amenable number.

260455649 is a deficient number, since it is larger than the sum of its proper divisors (1).

260455649 is an equidigital number, since it uses as much as digits as its factorization.

260455649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 260455649 is about 16138.6383874229. The cubic root of 260455649 is about 638.6230561032.

The spelling of 260455649 in words is "two hundred sixty million, four hundred fifty-five thousand, six hundred forty-nine".