85624879 has 2 divisors, whose sum is σ = 85624880. Its totient is φ = 85624878.

The previous prime is 85624873. The next prime is 85624897. The reversal of 85624879 is 97842658.

Together with next prime (85624897) 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 85624879 - 2⁷ = 85624751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85624873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42812439 + 42812440.

It is an arithmetic number, because the mean of its divisors is an integer number (42812440).

Almost surely, 2^85624879 is an apocalyptic number.

85624879 is a deficient number, since it is larger than the sum of its proper divisors (1).

85624879 is an equidigital number, since it uses as much as digits as its factorization.

85624879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 85624879 is about 9253.3712235055. The cubic root of 85624879 is about 440.7577833572.

The spelling of 85624879 in words is "eighty-five million, six hundred twenty-four thousand, eight hundred seventy-nine".