260649879 has 8 divisors (see below), whose sum is σ = 397180800. Its totient is φ = 148942776.

The previous prime is 260649859. The next prime is 260649911. The reversal of 260649879 is 978946062.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-260649879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260649859) 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, 6205929 + ... + 6205970.

It is an arithmetic number, because the mean of its divisors is an integer number (49647600).

Almost surely, 2^260649879 is an apocalyptic number.

260649879 is a deficient number, since it is larger than the sum of its proper divisors (136530921).

260649879 is a wasteful number, since it uses less digits than its factorization.

260649879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12411909.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 260649879 is about 16144.6548120423. The cubic root of 260649879 is about 638.7817637834.

The spelling of 260649879 in words is "two hundred sixty million, six hundred forty-nine thousand, eight hundred seventy-nine".