260722645 has 16 divisors (see below), whose sum is σ = 316590768. Its totient is φ = 206110720.

The previous prime is 260722577. The next prime is 260722663. The reversal of 260722645 is 546227062.

It can be written as a sum of positive squares in 8 ways, for example, as 18173169 + 242549476 = 4263^2 + 15574^2 .

It is not a de Polignac number, because 260722645 - 2²³ = 252334037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260722645.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 175305 + ... + 176785.

It is an arithmetic number, because the mean of its divisors is an integer number (19786923).

Almost surely, 2^260722645 is an apocalyptic number.

It is an amenable number.

260722645 is a deficient number, since it is larger than the sum of its proper divisors (55868123).

260722645 is a wasteful number, since it uses less digits than its factorization.

260722645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 260722645 is about 16146.9082179840. The cubic root of 260722645 is about 638.8412014592.

It can be divided in two parts, 2607 and 22645, that added together give a palindrome (25252).

The spelling of 260722645 in words is "two hundred sixty million, seven hundred twenty-two thousand, six hundred forty-five".