85287659 has 4 divisors (see below), whose sum is σ = 85309440. Its totient is φ = 85265880.

The previous prime is 85287641. The next prime is 85287661. The reversal of 85287659 is 95678258.

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-85287659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85287359) 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, 3212 + ... + 13449.

It is an arithmetic number, because the mean of its divisors is an integer number (21327360).

Almost surely, 2^85287659 is an apocalyptic number.

85287659 is a deficient number, since it is larger than the sum of its proper divisors (21781).

85287659 is a wasteful number, since it uses less digits than its factorization.

85287659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780.

The product of its digits is 1209600, while the sum is 50.

The square root of 85287659 is about 9235.1317803267. The cubic root of 85287659 is about 440.1784038936.

The spelling of 85287659 in words is "eighty-five million, two hundred eighty-seven thousand, six hundred fifty-nine".