85123970 has 16 divisors (see below), whose sum is σ = 155070720. Its totient is φ = 33639024.

The previous prime is 85123967. The next prime is 85123993. The reversal of 85123970 is 7932158.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85123970.

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 7 ways as a sum of consecutive naturals, for example, 50450 + ... + 52109.

It is an arithmetic number, because the mean of its divisors is an integer number (9691920).

Almost surely, 2^85123970 is an apocalyptic number.

85123970 is a deficient number, since it is larger than the sum of its proper divisors (69946750).

85123970 is a wasteful number, since it uses less digits than its factorization.

85123970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102649.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 85123970 is about 9226.2652248892. The cubic root of 85123970 is about 439.8966182735.

The spelling of 85123970 in words is "eighty-five million, one hundred twenty-three thousand, nine hundred seventy".