85513685 has 4 divisors (see below), whose sum is σ = 102616428. Its totient is φ = 68410944.

The previous prime is 85513679. The next prime is 85513691. The reversal of 85513685 is 58631558.

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

It is an interprime number because it is at equal distance from previous prime (85513679) and next prime (85513691).

It can be written as a sum of positive squares in 2 ways, for example, as 50951044 + 34562641 = 7138^2 + 5879^2 .

It is a cyclic number.

It is not a de Polignac number, because 85513685 - 2²⁰ = 84465109 is a prime.

It is a Duffinian number.

It is a congruent 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, 8551364 + ... + 8551373.

It is an arithmetic number, because the mean of its divisors is an integer number (25654107).

Almost surely, 2^85513685 is an apocalyptic number.

It is an amenable number.

85513685 is a deficient number, since it is larger than the sum of its proper divisors (17102743).

85513685 is a wasteful number, since it uses less digits than its factorization.

85513685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17102742.

The product of its digits is 144000, while the sum is 41.

The square root of 85513685 is about 9247.3609748944. The cubic root of 85513685 is about 440.5669087275.

The spelling of 85513685 in words is "eighty-five million, five hundred thirteen thousand, six hundred eighty-five".