260651264 has 36 divisors (see below), whose sum is σ = 525113820. Its totient is φ = 129116160.

The previous prime is 260651233. The next prime is 260651267. The reversal of 260651264 is 462156062.

260651264 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 2 ways, for example, as 129777664 + 130873600 = 11392^2 + 11440^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 260651264.

It is not an unprimeable number, because it can be changed into a prime (260651267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23234 + ... + 32574.

It is an arithmetic number, because the mean of its divisors is an integer number (14586495).

Almost surely, 2^260651264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260651264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262556910).

260651264 is an abundant number, since it is smaller than the sum of its proper divisors (264462556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260651264 is an equidigital number, since it uses as much as digits as its factorization.

260651264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9466 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 260651264 is about 16144.6977054388. The cubic root of 260651264 is about 638.7828952004.

The spelling of 260651264 in words is "two hundred sixty million, six hundred fifty-one thousand, two hundred sixty-four".