223856613 has 12 divisors (see below), whose sum is σ = 340367040. Its totient is φ = 141383016.

The previous prime is 223856587. The next prime is 223856621. The reversal of 223856613 is 316658322.

It is a happy number.

223856613 is a `hidden beast` number, since 2 + 2 + 38 + 5 + 6 + 613 = 666.

It is not a de Polignac number, because 223856613 - 2¹⁴ = 223840229 is a prime.

It is a super-2 number, since 2×223856613² = 100223566367663538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223856693) 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, 654381 + ... + 654722.

It is an arithmetic number, because the mean of its divisors is an integer number (28363920).

Almost surely, 2^223856613 is an apocalyptic number.

It is an amenable number.

223856613 is a deficient number, since it is larger than the sum of its proper divisors (116510427).

223856613 is a wasteful number, since it uses less digits than its factorization.

223856613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309128 (or 1309125 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 223856613 is about 14961.8385568085. The cubic root of 223856613 is about 607.1881811845.

The spelling of 223856613 in words is "two hundred twenty-three million, eight hundred fifty-six thousand, six hundred thirteen".