855683613 has 12 divisors (see below), whose sum is σ = 1236270048. Its totient is φ = 570325320.

The previous prime is 855683597. The next prime is 855683623. The reversal of 855683613 is 316386558.

855683613 is a `hidden beast` number, since 8 + 556 + 83 + 6 + 13 = 666.

It is not a de Polignac number, because 855683613 - 2⁴ = 855683597 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855683623) 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, 46768 + ... + 62438.

It is an arithmetic number, because the mean of its divisors is an integer number (103022504).

Almost surely, 2^855683613 is an apocalyptic number.

It is an amenable number.

855683613 is a deficient number, since it is larger than the sum of its proper divisors (380586435).

855683613 is a wasteful number, since it uses less digits than its factorization.

855683613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21744 (or 21741 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 855683613 is about 29252.0702344296. The cubic root of 855683613 is about 949.3748844141.

The spelling of 855683613 in words is "eight hundred fifty-five million, six hundred eighty-three thousand, six hundred thirteen".