985513 has 4 divisors (see below), whose sum is σ = 993168. Its totient is φ = 977860.

The previous prime is 985499. The next prime is 985519. The reversal of 985513 is 315589.

985513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985519) 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, 3631 + ... + 3892.

It is an arithmetic number, because the mean of its divisors is an integer number (248292).

2⁹⁸⁵⁵¹³ is an apocalyptic number.

It is an amenable number.

985513 is a deficient number, since it is larger than the sum of its proper divisors (7655).

985513 is a wasteful number, since it uses less digits than its factorization.

985513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654.

The product of its digits is 5400, while the sum is 31.

The square root of 985513 is about 992.7300740886. The cubic root of 985513 is about 99.5147491246.

The spelling of 985513 in words is "nine hundred eighty-five thousand, five hundred thirteen".