223081986 has 16 divisors (see below), whose sum is σ = 447593184. Its totient is φ = 74122464.

The previous prime is 223081981. The next prime is 223081993. The reversal of 223081986 is 689180322.

It is a happy number.

223081986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223081986³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223081981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57516 + ... + 61271.

It is an arithmetic number, because the mean of its divisors is an integer number (27974574).

Almost surely, 2^223081986 is an apocalyptic number.

223081986 is an abundant number, since it is smaller than the sum of its proper divisors (224511198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223081986 is a wasteful number, since it uses less digits than its factorization.

223081986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119105.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 223081986 is about 14935.9293651249. The cubic root of 223081986 is about 606.4870062668.

The spelling of 223081986 in words is "two hundred twenty-three million, eighty-one thousand, nine hundred eighty-six".