985615 has 4 divisors (see below), whose sum is σ = 1182744. Its totient is φ = 788488.

The previous prime is 985613. The next prime is 985631. The reversal of 985615 is 516589.

985615 is nontrivially palindromic in base 4 and base 16.

985615 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 985615 - 2¹ = 985613 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985613) 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, 98557 + ... + 98566.

It is an arithmetic number, because the mean of its divisors is an integer number (295686).

2⁹⁸⁵⁶¹⁵ is an apocalyptic number.

985615 is a deficient number, since it is larger than the sum of its proper divisors (197129).

985615 is a wasteful number, since it uses less digits than its factorization.

985615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197128.

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

The square root of 985615 is about 992.7814462408. The cubic root of 985615 is about 99.5181822449.

It can be divided in two parts, 985 and 615, that added together give a square (1600 = 40²).

The spelling of 985615 in words is "nine hundred eighty-five thousand, six hundred fifteen".