85865319 has 16 divisors (see below), whose sum is σ = 131312640. Its totient is φ = 55396440.

The previous prime is 85865293. The next prime is 85865321. The reversal of 85865319 is 91356858.

85865319 is a `hidden beast` number, since 8 + 586 + 53 + 19 = 666.

It is not a de Polignac number, because 85865319 - 2¹³ = 85857127 is a prime.

It is a super-2 number, since 2×85865319² = 14745706013943522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85865359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50457 + ... + 52130.

It is an arithmetic number, because the mean of its divisors is an integer number (8207040).

Almost surely, 2^85865319 is an apocalyptic number.

85865319 is a deficient number, since it is larger than the sum of its proper divisors (45447321).

85865319 is a wasteful number, since it uses less digits than its factorization.

85865319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102627 (or 102621 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 85865319 is about 9266.3541374156. The cubic root of 85865319 is about 441.1699562426.

The spelling of 85865319 in words is "eighty-five million, eight hundred sixty-five thousand, three hundred nineteen".