85242623 has 4 divisors (see below), whose sum is σ = 88948848. Its totient is φ = 81536400.

The previous prime is 85242601. The next prime is 85242637. The reversal of 85242623 is 32624258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85242623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85242623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85242323) 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, 1853078 + ... + 1853123.

It is an arithmetic number, because the mean of its divisors is an integer number (22237212).

Almost surely, 2^85242623 is an apocalyptic number.

85242623 is a deficient number, since it is larger than the sum of its proper divisors (3706225).

85242623 is a wasteful number, since it uses less digits than its factorization.

85242623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706224.

The product of its digits is 23040, while the sum is 32.

The square root of 85242623 is about 9232.6931607197. The cubic root of 85242623 is about 440.1009117720.

The spelling of 85242623 in words is "eighty-five million, two hundred forty-two thousand, six hundred twenty-three".