85207613 has 8 divisors (see below), whose sum is σ = 86286648. Its totient is φ = 84132864.

The previous prime is 85207607. The next prime is 85207637. The reversal of 85207613 is 31670258.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2815684 + 82391929 = 1678^2 + 9077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85207613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85207613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85207673) 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, 58745 + ... + 60177.

It is an arithmetic number, because the mean of its divisors is an integer number (10785831).

Almost surely, 2^85207613 is an apocalyptic number.

It is an amenable number.

85207613 is a deficient number, since it is larger than the sum of its proper divisors (1079035).

85207613 is a wasteful number, since it uses less digits than its factorization.

85207613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 85207613 is about 9230.7969861762. The cubic root of 85207613 is about 440.0406522357.

The spelling of 85207613 in words is "eighty-five million, two hundred seven thousand, six hundred thirteen".