85641265 has 16 divisors (see below), whose sum is σ = 109710720. Its totient is φ = 63987840.

The previous prime is 85641253. The next prime is 85641277. The reversal of 85641265 is 56214658.

It is an interprime number because it is at equal distance from previous prime (85641253) and next prime (85641277).

It is not a de Polignac number, because 85641265 - 2⁷ = 85641137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (6856920).

Almost surely, 2^85641265 is an apocalyptic number.

It is an amenable number.

85641265 is a deficient number, since it is larger than the sum of its proper divisors (24069455).

85641265 is a wasteful number, since it uses less digits than its factorization.

85641265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12792.

The product of its digits is 57600, while the sum is 37.

The square root of 85641265 is about 9254.2565881869. The cubic root of 85641265 is about 440.7858974461.

The spelling of 85641265 in words is "eighty-five million, six hundred forty-one thousand, two hundred sixty-five".