834721685 has 8 divisors (see below), whose sum is σ = 1144761216. Its totient is φ = 572380560.

The previous prime is 834721669. The next prime is 834721729. The reversal of 834721685 is 586127438.

834721685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 834721685 - 2⁴ = 834721669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11924561 + ... + 11924630.

It is an arithmetic number, because the mean of its divisors is an integer number (143095152).

Almost surely, 2^834721685 is an apocalyptic number.

It is an amenable number.

834721685 is a deficient number, since it is larger than the sum of its proper divisors (310039531).

834721685 is a wasteful number, since it uses less digits than its factorization.

834721685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23849203.

The product of its digits is 322560, while the sum is 44.

The square root of 834721685 is about 28891.5504083806. The cubic root of 834721685 is about 941.5583345064.

The spelling of 834721685 in words is "eight hundred thirty-four million, seven hundred twenty-one thousand, six hundred eighty-five".