85875679 has 2 divisors, whose sum is σ = 85875680. Its totient is φ = 85875678.

The previous prime is 85875677. The next prime is 85875697. The reversal of 85875679 is 97657858.

Together with next prime (85875697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85875679 - 2¹ = 85875677 is a prime.

It is a super-2 number, since 2×85875679² = 14749264487422082, which contains 22 as substring.

Together with 85875677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85875677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42937839 + 42937840.

It is an arithmetic number, because the mean of its divisors is an integer number (42937840).

Almost surely, 2^85875679 is an apocalyptic number.

85875679 is a deficient number, since it is larger than the sum of its proper divisors (1).

85875679 is an equidigital number, since it uses as much as digits as its factorization.

85875679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 55.

The square root of 85875679 is about 9266.9131322140. The cubic root of 85875679 is about 441.1876985123.

The spelling of 85875679 in words is "eighty-five million, eight hundred seventy-five thousand, six hundred seventy-nine".