85645983 has 8 divisors (see below), whose sum is σ = 120912048. Its totient is φ = 53738624.

The previous prime is 85645943. The next prime is 85645999. The reversal of 85645983 is 38954658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85645983 - 2⁸ = 85645727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85645943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839616 + ... + 839717.

It is an arithmetic number, because the mean of its divisors is an integer number (15114006).

Almost surely, 2^85645983 is an apocalyptic number.

85645983 is a deficient number, since it is larger than the sum of its proper divisors (35266065).

85645983 is a wasteful number, since it uses less digits than its factorization.

85645983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679353.

The product of its digits is 1036800, while the sum is 48.

The square root of 85645983 is about 9254.5114944010. The cubic root of 85645983 is about 440.7939916348.

The spelling of 85645983 in words is "eighty-five million, six hundred forty-five thousand, nine hundred eighty-three".