265985087 has 8 divisors (see below), whose sum is σ = 277724160. Its totient is φ = 254260600.

The previous prime is 265985051. The next prime is 265985101. The reversal of 265985087 is 780589562.

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

It is a cyclic number.

It is not a de Polignac number, because 265985087 - 2⁶ = 265985023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265985287) 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 7 ways as a sum of consecutive naturals, for example, 51614 + ... + 56532.

It is an arithmetic number, because the mean of its divisors is an integer number (34715520).

Almost surely, 2^265985087 is an apocalyptic number.

265985087 is a deficient number, since it is larger than the sum of its proper divisors (11739073).

265985087 is a wasteful number, since it uses less digits than its factorization.

265985087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7293.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 265985087 is about 16309.0492365435. The cubic root of 265985087 is about 643.1107402546.

The spelling of 265985087 in words is "two hundred sixty-five million, nine hundred eighty-five thousand, eighty-seven".