856339623 has 12 divisors (see below), whose sum is σ = 1309696128. Its totient is φ = 537311040.

The previous prime is 856339621. The next prime is 856339639. The reversal of 856339623 is 326933658.

856339623 is a `hidden beast` number, since 8 + 5 + 633 + 9 + 6 + 2 + 3 = 666.

856339623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 856339623 - 2¹ = 856339621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856339621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2798343 + ... + 2798648.

It is an arithmetic number, because the mean of its divisors is an integer number (109141344).

Almost surely, 2^856339623 is an apocalyptic number.

856339623 is a deficient number, since it is larger than the sum of its proper divisors (453356505).

856339623 is a wasteful number, since it uses less digits than its factorization.

856339623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597014 (or 5597011 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 856339623 is about 29263.2811386557. The cubic root of 856339623 is about 949.6174352510.

The spelling of 856339623 in words is "eight hundred fifty-six million, three hundred thirty-nine thousand, six hundred twenty-three".