260963865 has 24 divisors (see below), whose sum is σ = 472006080. Its totient is φ = 133128864.

The previous prime is 260963827. The next prime is 260963887. The reversal of 260963865 is 568369062.

It is a happy number.

260963865 is a `hidden beast` number, since 2 + 6 + 0 + 9 + 638 + 6 + 5 = 666.

It is not a de Polignac number, because 260963865 - 2⁷ = 260963737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 260963865.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125035 + ... + 127104.

It is an arithmetic number, because the mean of its divisors is an integer number (19666920).

Almost surely, 2^260963865 is an apocalyptic number.

It is an amenable number.

260963865 is a deficient number, since it is larger than the sum of its proper divisors (211042215).

260963865 is a wasteful number, since it uses less digits than its factorization.

260963865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252173 (or 252170 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 260963865 is about 16154.3760325182. The cubic root of 260963865 is about 639.0381588739.

The spelling of 260963865 in words is "two hundred sixty million, nine hundred sixty-three thousand, eight hundred sixty-five".