985312563 has 8 divisors (see below), whose sum is σ = 1314311376. Its totient is φ = 656594400.

The previous prime is 985312561. The next prime is 985312579. The reversal of 985312563 is 365213589.

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

It is not a de Polignac number, because 985312563 - 2¹ = 985312561 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (985312561) 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, 61828 + ... + 76113.

It is an arithmetic number, because the mean of its divisors is an integer number (164288922).

Almost surely, 2^985312563 is an apocalyptic number.

985312563 is a deficient number, since it is larger than the sum of its proper divisors (328998813).

985312563 is a wasteful number, since it uses less digits than its factorization.

985312563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140325.

The product of its digits is 194400, while the sum is 42.

The square root of 985312563 is about 31389.6888006237. The cubic root of 985312563 is about 995.0800211730.

The spelling of 985312563 in words is "nine hundred eighty-five million, three hundred twelve thousand, five hundred sixty-three".