260715 has 32 divisors (see below), whose sum is σ = 516096. Its totient is φ = 109440.

The previous prime is 260713. The next prime is 260717. The reversal of 260715 is 517062.

260715 = 53² + 54² + ... + 97².

It is an interprime number because it is at equal distance from previous prime (260713) and next prime (260717).

It is not a de Polignac number, because 260715 - 2¹ = 260713 is a prime.

It is a super-2 number, since 2×260715² = 135944622450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

260715 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 260691 and 260700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270 + ... + 1460.

It is an arithmetic number, because the mean of its divisors is an integer number (16128).

2²⁶⁰⁷¹⁵ is an apocalyptic number.

260715 is a deficient number, since it is larger than the sum of its proper divisors (255381).

260715 is a wasteful number, since it uses less digits than its factorization.

260715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 260715 is about 510.6025851873. The cubic root of 260715 is about 63.8834957290.

Adding to 260715 its reverse (517062), we get a palindrome (777777).

The spelling of 260715 in words is "two hundred sixty thousand, seven hundred fifteen".