260664755 has 24 divisors (see below), whose sum is σ = 340336080. Its totient is φ = 191568000.

The previous prime is 260664751. The next prime is 260664763. The reversal of 260664755 is 557466062.

It is not a de Polignac number, because 260664755 - 2² = 260664751 is a prime.

It is a super-2 number, since 2×260664755² = 135892228998420050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (260664751) 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 in 23 ways as a sum of consecutive naturals, for example, 211481 + ... + 212709.

It is an arithmetic number, because the mean of its divisors is an integer number (14180670).

Almost surely, 2^260664755 is an apocalyptic number.

260664755 is a deficient number, since it is larger than the sum of its proper divisors (79671325).

260664755 is a wasteful number, since it uses less digits than its factorization.

260664755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 260664755 is about 16145.1155152263. The cubic root of 260664755 is about 638.7939158917.

The spelling of 260664755 in words is "two hundred sixty million, six hundred sixty-four thousand, seven hundred fifty-five".