85623113 has 4 divisors (see below), whose sum is σ = 85645188. Its totient is φ = 85601040.

The previous prime is 85623107. The next prime is 85623121. The reversal of 85623113 is 31132658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31132658 = 2 ⋅15566329.

It can be written as a sum of positive squares in 2 ways, for example, as 57032704 + 28590409 = 7552^2 + 5347^2 .

It is a cyclic number.

It is not a de Polignac number, because 85623113 - 2¹⁸ = 85360969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85623173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3506 + ... + 13547.

It is an arithmetic number, because the mean of its divisors is an integer number (21411297).

Almost surely, 2^85623113 is an apocalyptic number.

It is an amenable number.

85623113 is a deficient number, since it is larger than the sum of its proper divisors (22075).

85623113 is a wasteful number, since it uses less digits than its factorization.

85623113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22074.

The product of its digits is 4320, while the sum is 29.

The square root of 85623113 is about 9253.2757983322. The cubic root of 85623113 is about 440.7547531491.

The spelling of 85623113 in words is "eighty-five million, six hundred twenty-three thousand, one hundred thirteen".