85539785 has 4 divisors (see below), whose sum is σ = 102647748. Its totient is φ = 68431824.

The previous prime is 85539761. The next prime is 85539791. The reversal of 85539785 is 58793558.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62220544 + 23319241 = 7888^2 + 4829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85539785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8553974 + ... + 8553983.

It is an arithmetic number, because the mean of its divisors is an integer number (25661937).

Almost surely, 2^85539785 is an apocalyptic number.

It is an amenable number.

85539785 is a deficient number, since it is larger than the sum of its proper divisors (17107963).

85539785 is a wasteful number, since it uses less digits than its factorization.

85539785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17107962.

The product of its digits is 1512000, while the sum is 50.

The square root of 85539785 is about 9248.7720806602. The cubic root of 85539785 is about 440.6117266092.

The spelling of 85539785 in words is "eighty-five million, five hundred thirty-nine thousand, seven hundred eighty-five".