985651 has 4 divisors (see below), whose sum is σ = 990952. Its totient is φ = 980352.

The previous prime is 985639. The next prime is 985657. The reversal of 985651 is 156589.

985651 is nontrivially palindromic in base 8.

985651 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.

It is a cyclic number.

It is not a de Polignac number, because 985651 - 2¹⁵ = 952883 is a prime.

It is a Duffinian number.

985651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (985657) 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, 2361 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (247738).

2⁹⁸⁵⁶⁵¹ is an apocalyptic number.

985651 is a deficient number, since it is larger than the sum of its proper divisors (5301).

985651 is a wasteful number, since it uses less digits than its factorization.

985651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300.

The product of its digits is 10800, while the sum is 34.

The square root of 985651 is about 992.7995769540. The cubic root of 985651 is about 99.5193938779.

The spelling of 985651 in words is "nine hundred eighty-five thousand, six hundred fifty-one".