85655783 has 4 divisors (see below), whose sum is σ = 85972128. Its totient is φ = 85339440.

The previous prime is 85655771. The next prime is 85655789. The reversal of 85655783 is 38755658.

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

It is a cyclic number.

It is not a de Polignac number, because 85655783 - 2⁴ = 85655767 is a prime.

It is a super-2 number, since 2×85655783² = 14673826322686178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85655789) 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, 157766 + ... + 158307.

It is an arithmetic number, because the mean of its divisors is an integer number (21493032).

Almost surely, 2^85655783 is an apocalyptic number.

85655783 is a deficient number, since it is larger than the sum of its proper divisors (316345).

85655783 is a wasteful number, since it uses less digits than its factorization.

85655783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316344.

The product of its digits is 1008000, while the sum is 47.

The square root of 85655783 is about 9255.0409507468. The cubic root of 85655783 is about 440.8108035397.

The spelling of 85655783 in words is "eighty-five million, six hundred fifty-five thousand, seven hundred eighty-three".