85645102 has 4 divisors (see below), whose sum is σ = 128467656. Its totient is φ = 42822550.

The previous prime is 85645097. The next prime is 85645129. The reversal of 85645102 is 20154658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20154658 = 2 ⋅10077329.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21411274 + ... + 21411277.

It is an arithmetic number, because the mean of its divisors is an integer number (32116914).

Almost surely, 2^85645102 is an apocalyptic number.

85645102 is a deficient number, since it is larger than the sum of its proper divisors (42822554).

85645102 is a wasteful number, since it uses less digits than its factorization.

85645102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42822553.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 85645102 is about 9254.4638958721. The cubic root of 85645102 is about 440.7924802160.

The spelling of 85645102 in words is "eighty-five million, six hundred forty-five thousand, one hundred two".