85913 has 4 divisors (see below), whose sum is σ = 87588. Its totient is φ = 84240.

The previous prime is 85909. The next prime is 85931. The reversal of 85913 is 31958.

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 64009 + 21904 = 253^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 85913 - 2² = 85909 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (85903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758 + ... + 863.

It is an arithmetic number, because the mean of its divisors is an integer number (21897).

2⁸⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

85913 is a deficient number, since it is larger than the sum of its proper divisors (1675).

85913 is a wasteful number, since it uses less digits than its factorization.

85913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its digits is 1080, while the sum is 26.

The square root of 85913 is about 293.1091946698. The cubic root of 85913 is about 44.1251601671.

The spelling of 85913 in words is "eighty-five thousand, nine hundred thirteen".