260345257 has 8 divisors (see below), whose sum is σ = 272078784. Its totient is φ = 248646288.

The previous prime is 260345237. The next prime is 260345273. The reversal of 260345257 is 752543062.

260345257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260345257 is a prime.

It is a super-3 number, since 3×260345257³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260345237) 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, 7423 + ... + 23995.

It is an arithmetic number, because the mean of its divisors is an integer number (34009848).

Almost surely, 2^260345257 is an apocalyptic number.

It is an amenable number.

260345257 is a deficient number, since it is larger than the sum of its proper divisors (11733527).

260345257 is a wasteful number, since it uses less digits than its factorization.

260345257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17279.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 260345257 is about 16135.2179099013. The cubic root of 260345257 is about 638.5328182973.

The spelling of 260345257 in words is "two hundred sixty million, three hundred forty-five thousand, two hundred fifty-seven".