85617583 has 2 divisors, whose sum is σ = 85617584. Its totient is φ = 85617582.

The previous prime is 85617563. The next prime is 85617607. The reversal of 85617583 is 38571658.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85617583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85617533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42808791 + 42808792.

It is an arithmetic number, because the mean of its divisors is an integer number (42808792).

Almost surely, 2^85617583 is an apocalyptic number.

85617583 is a deficient number, since it is larger than the sum of its proper divisors (1).

85617583 is an equidigital number, since it uses as much as digits as its factorization.

85617583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 85617583 is about 9252.9769804101. The cubic root of 85617583 is about 440.7452641760.

The spelling of 85617583 in words is "eighty-five million, six hundred seventeen thousand, five hundred eighty-three".