85863685 has 16 divisors (see below), whose sum is σ = 109719792. Its totient is φ = 64281600.

The previous prime is 85863677. The next prime is 85863709. The reversal of 85863685 is 58636858.

It can be written as a sum of positive squares in 8 ways, for example, as 10556001 + 75307684 = 3249^2 + 8678^2 .

It is not a de Polignac number, because 85863685 - 2³ = 85863677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12595 + ... + 18175.

It is an arithmetic number, because the mean of its divisors is an integer number (6857487).

Almost surely, 2^85863685 is an apocalyptic number.

85863685 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85863685 is a deficient number, since it is larger than the sum of its proper divisors (23856107).

85863685 is a wasteful number, since it uses less digits than its factorization.

85863685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784.

The product of its digits is 1382400, while the sum is 49.

The square root of 85863685 is about 9266.2659685550. The cubic root of 85863685 is about 441.1671577659.

The spelling of 85863685 in words is "eighty-five million, eight hundred sixty-three thousand, six hundred eighty-five".