856349683 has 4 divisors (see below), whose sum is σ = 978685360. Its totient is φ = 734014008.

The previous prime is 856349633. The next prime is 856349693. The reversal of 856349683 is 386943658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386943658 = 2 ⋅193471829.

It is not a de Polignac number, because 856349683 - 2¹³ = 856341491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856349683.

It is not an unprimeable number, because it can be changed into a prime (856349603) 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, 61167828 + ... + 61167841.

It is an arithmetic number, because the mean of its divisors is an integer number (244671340).

Almost surely, 2^856349683 is an apocalyptic number.

856349683 is a deficient number, since it is larger than the sum of its proper divisors (122335677).

856349683 is a wasteful number, since it uses less digits than its factorization.

856349683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122335676.

The product of its digits is 3732480, while the sum is 52.

The square root of 856349683 is about 29263.4530259161. The cubic root of 856349683 is about 949.6211538356.

The spelling of 856349683 in words is "eight hundred fifty-six million, three hundred forty-nine thousand, six hundred eighty-three".