260955861 has 32 divisors (see below), whose sum is σ = 394567680. Its totient is φ = 152539200.

The previous prime is 260955841. The next prime is 260955869. The reversal of 260955861 is 168559062.

It is not a de Polignac number, because 260955861 - 2⁷ = 260955733 is a prime.

It is a super-2 number, since 2×260955861² = 136195922780502642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260955869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37431 + ... + 43851.

It is an arithmetic number, because the mean of its divisors is an integer number (12330240).

Almost surely, 2^260955861 is an apocalyptic number.

It is an amenable number.

260955861 is a deficient number, since it is larger than the sum of its proper divisors (133611819).

260955861 is a wasteful number, since it uses less digits than its factorization.

260955861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6497.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 260955861 is about 16154.1282958877. The cubic root of 260955861 is about 639.0316255125.

The spelling of 260955861 in words is "two hundred sixty million, nine hundred fifty-five thousand, eight hundred sixty-one".