85251679 has 4 divisors (see below), whose sum is σ = 85315680. Its totient is φ = 85187680.

The previous prime is 85251659. The next prime is 85251697. The reversal of 85251679 is 97615258.

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

It is a cyclic number.

It is not a de Polignac number, because 85251679 - 2⁹ = 85251167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85251659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29959 + ... + 32680.

It is an arithmetic number, because the mean of its divisors is an integer number (21328920).

Almost surely, 2^85251679 is an apocalyptic number.

85251679 is a deficient number, since it is larger than the sum of its proper divisors (64001).

85251679 is a wasteful number, since it uses less digits than its factorization.

85251679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64000.

The product of its digits is 151200, while the sum is 43.

The square root of 85251679 is about 9233.1835788096. The cubic root of 85251679 is about 440.1164963570.

The spelling of 85251679 in words is "eighty-five million, two hundred fifty-one thousand, six hundred seventy-nine".