85863686 has 4 divisors (see below), whose sum is σ = 128795532. Its totient is φ = 42931842.

The previous prime is 85863677. The next prime is 85863709. The reversal of 85863686 is 68636858.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21465920 + ... + 21465923.

It is an arithmetic number, because the mean of its divisors is an integer number (32198883).

Almost surely, 2^85863686 is an apocalyptic number.

85863686 is a deficient number, since it is larger than the sum of its proper divisors (42931846).

85863686 is a wasteful number, since it uses less digits than its factorization.

85863686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42931845.

The product of its digits is 1658880, while the sum is 50.

The square root of 85863686 is about 9266.2660225141. The cubic root of 85863686 is about 441.1671594786.

The spelling of 85863686 in words is "eighty-five million, eight hundred sixty-three thousand, six hundred eighty-six".