834615985 has 16 divisors (see below), whose sum is σ = 1161703296. Its totient is φ = 563764608.

The previous prime is 834615949. The next prime is 834615997. The reversal of 834615985 is 589516438.

It is a cyclic number.

It is not a de Polignac number, because 834615985 - 2⁹ = 834615473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175612 + ... + 180301.

It is an arithmetic number, because the mean of its divisors is an integer number (72606456).

Almost surely, 2^834615985 is an apocalyptic number.

It is an amenable number.

834615985 is a deficient number, since it is larger than the sum of its proper divisors (327087311).

834615985 is a wasteful number, since it uses less digits than its factorization.

834615985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355992.

The product of its digits is 1036800, while the sum is 49.

The square root of 834615985 is about 28889.7210959192. The cubic root of 834615985 is about 941.5185899549.

The spelling of 834615985 in words is "eight hundred thirty-four million, six hundred fifteen thousand, nine hundred eighty-five".