260631081 has 8 divisors (see below), whose sum is σ = 386120160. Its totient is φ = 173754036.

The previous prime is 260631079. The next prime is 260631089. The reversal of 260631081 is 180136062.

260631081 is a `hidden beast` number, since 26 + 0 + 631 + 0 + 8 + 1 = 666.

260631081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 260631081 - 2¹ = 260631079 is a prime.

It is a super-2 number, since 2×260631081² = 135857120766457122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9653003 = 260631081 / (2 + 6 + 0 + 6 + 3 + 1 + 0 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (260631089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4826475 + ... + 4826528.

It is an arithmetic number, because the mean of its divisors is an integer number (48265020).

Almost surely, 2^260631081 is an apocalyptic number.

It is an amenable number.

260631081 is a deficient number, since it is larger than the sum of its proper divisors (125489079).

260631081 is an equidigital number, since it uses as much as digits as its factorization.

260631081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9653012 (or 9653006 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 260631081 is about 16144.0726274382. The cubic root of 260631081 is about 638.7664071572.

The spelling of 260631081 in words is "two hundred sixty million, six hundred thirty-one thousand, eighty-one".