85632579 has 8 divisors (see below), whose sum is σ = 126863120. Its totient is φ = 57088368.

The previous prime is 85632523. The next prime is 85632581. The reversal of 85632579 is 97523658.

It is a happy number.

85632579 is a `hidden beast` number, since 8 + 5 + 632 + 5 + 7 + 9 = 666.

It is not a de Polignac number, because 85632579 - 2²⁴ = 68855363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85632779) 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, 1585762 + ... + 1585815.

It is an arithmetic number, because the mean of its divisors is an integer number (15857890).

Almost surely, 2^85632579 is an apocalyptic number.

85632579 is a deficient number, since it is larger than the sum of its proper divisors (41230541).

85632579 is a wasteful number, since it uses less digits than its factorization.

85632579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171586 (or 3171580 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 85632579 is about 9253.7872787308. The cubic root of 85632579 is about 440.7709949893.

The spelling of 85632579 in words is "eighty-five million, six hundred thirty-two thousand, five hundred seventy-nine".