85623793 has 4 divisors (see below), whose sum is σ = 87615088. Its totient is φ = 83632500.

The previous prime is 85623721. The next prime is 85623841. The reversal of 85623793 is 39732658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85623793 - 2¹⁷ = 85492721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 1991251 = 85623793 / (8 + 5 + 6 + 2 + 3 + 7 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85621793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995583 + ... + 995668.

It is an arithmetic number, because the mean of its divisors is an integer number (21903772).

Almost surely, 2^85623793 is an apocalyptic number.

It is an amenable number.

85623793 is a deficient number, since it is larger than the sum of its proper divisors (1991295).

85623793 is a wasteful number, since it uses less digits than its factorization.

85623793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991294.

The product of its digits is 272160, while the sum is 43.

The square root of 85623793 is about 9253.3125420035. The cubic root of 85623793 is about 440.7559199386.

It can be divided in two parts, 856 and 23793, that added together give a square (24649 = 157²).

The spelling of 85623793 in words is "eighty-five million, six hundred twenty-three thousand, seven hundred ninety-three".