85507659 has 12 divisors (see below), whose sum is σ = 124666776. Its totient is φ = 56471712.

The previous prime is 85507649. The next prime is 85507661. The reversal of 85507659 is 95670558.

85507659 is a `hidden beast` number, since 85 + 507 + 65 + 9 = 666.

It is not a de Polignac number, because 85507659 - 2⁵ = 85507627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85507649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43434 + ... + 45359.

It is an arithmetic number, because the mean of its divisors is an integer number (10388898).

Almost surely, 2^85507659 is an apocalyptic number.

85507659 is a deficient number, since it is larger than the sum of its proper divisors (39159117).

85507659 is a wasteful number, since it uses less digits than its factorization.

85507659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88906 (or 88903 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 85507659 is about 9247.0351464672. The cubic root of 85507659 is about 440.5565598243.

The spelling of 85507659 in words is "eighty-five million, five hundred seven thousand, six hundred fifty-nine".