85624079 has 2 divisors, whose sum is σ = 85624080. Its totient is φ = 85624078.

The previous prime is 85624069. The next prime is 85624081. The reversal of 85624079 is 97042658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85624079 - 2¹² = 85619983 is a prime.

Together with 85624081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85624069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42812039 + 42812040.

It is an arithmetic number, because the mean of its divisors is an integer number (42812040).

Almost surely, 2^85624079 is an apocalyptic number.

85624079 is a deficient number, since it is larger than the sum of its proper divisors (1).

85624079 is an equidigital number, since it uses as much as digits as its factorization.

85624079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 85624079 is about 9253.3279959158. The cubic root of 85624079 is about 440.7564106746.

The spelling of 85624079 in words is "eighty-five million, six hundred twenty-four thousand, seventy-nine".