85757905 has 4 divisors (see below), whose sum is σ = 102909492. Its totient is φ = 68606320.

The previous prime is 85757899. The next prime is 85757921. The reversal of 85757905 is 50975758.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20729809 + 65028096 = 4553^2 + 8064^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85757905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8575786 + ... + 8575795.

It is an arithmetic number, because the mean of its divisors is an integer number (25727373).

Almost surely, 2^85757905 is an apocalyptic number.

It is an amenable number.

85757905 is a deficient number, since it is larger than the sum of its proper divisors (17151587).

85757905 is a wasteful number, since it uses less digits than its factorization.

85757905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17151586.

The product of its (nonzero) digits is 441000, while the sum is 46.

The square root of 85757905 is about 9260.5564087694. The cubic root of 85757905 is about 440.9859176263.

The spelling of 85757905 in words is "eighty-five million, seven hundred fifty-seven thousand, nine hundred five".