223489665 has 64 divisors (see below), whose sum is σ = 461637120. Its totient is φ = 100465920.

The previous prime is 223489661. The next prime is 223489681. The reversal of 223489665 is 566984322.

It is not a de Polignac number, because 223489665 - 2² = 223489661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 223489665.

It is not an unprimeable number, because it can be changed into a prime (223489661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55707 + ... + 59583.

It is an arithmetic number, because the mean of its divisors is an integer number (7213080).

Almost surely, 2^223489665 is an apocalyptic number.

It is an amenable number.

223489665 is an abundant number, since it is smaller than the sum of its proper divisors (238147455).

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

223489665 is a wasteful number, since it uses less digits than its factorization.

223489665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959 (or 3953 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 223489665 is about 14949.5707296230. The cubic root of 223489665 is about 606.8562300918.

The spelling of 223489665 in words is "two hundred twenty-three million, four hundred eighty-nine thousand, six hundred sixty-five".