85631075 has 6 divisors (see below), whose sum is σ = 106182564. Its totient is φ = 68504840.

The previous prime is 85631059. The next prime is 85631107. The reversal of 85631075 is 57013658.

It is not a de Polignac number, because 85631075 - 2⁴ = 85631059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1712597 + ... + 1712646.

It is an arithmetic number, because the mean of its divisors is an integer number (17697094).

Almost surely, 2^85631075 is an apocalyptic number.

85631075 is a deficient number, since it is larger than the sum of its proper divisors (20551489).

85631075 is a wasteful number, since it uses less digits than its factorization.

85631075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425253 (or 3425248 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 85631075 is about 9253.7060143491. The cubic root of 85631075 is about 440.7684144938.

The spelling of 85631075 in words is "eighty-five million, six hundred thirty-one thousand, seventy-five".