260015887 has 4 divisors (see below), whose sum is σ = 260216136. Its totient is φ = 259815640.

The previous prime is 260015869. The next prime is 260015923. The reversal of 260015887 is 788510062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260015887 is a prime.

It is a super-2 number, since 2×260015887² = 135216522984793538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260015857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98164 + ... + 100777.

It is an arithmetic number, because the mean of its divisors is an integer number (65054034).

Almost surely, 2^260015887 is an apocalyptic number.

260015887 is a deficient number, since it is larger than the sum of its proper divisors (200249).

260015887 is a wasteful number, since it uses less digits than its factorization.

260015887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200248.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 260015887 is about 16125.0081240290. The cubic root of 260015887 is about 638.2634294732.

The spelling of 260015887 in words is "two hundred sixty million, fifteen thousand, eight hundred eighty-seven".