223685406 has 24 divisors (see below), whose sum is σ = 553887984. Its totient is φ = 63910080.

The previous prime is 223685401. The next prime is 223685417. The reversal of 223685406 is 604586322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223685401) 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, 887515 + ... + 887766.

It is an arithmetic number, because the mean of its divisors is an integer number (23078666).

Almost surely, 2^223685406 is an apocalyptic number.

223685406 is an abundant number, since it is smaller than the sum of its proper divisors (330202578).

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

223685406 is a wasteful number, since it uses less digits than its factorization.

223685406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775296 (or 1775293 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 223685406 is about 14956.1160065038. The cubic root of 223685406 is about 607.0333478762.

The spelling of 223685406 in words is "two hundred twenty-three million, six hundred eighty-five thousand, four hundred six".