223649964 has 24 divisors (see below), whose sum is σ = 579833520. Its totient is φ = 74549952.

The previous prime is 223649927. The next prime is 223649971. The reversal of 223649964 is 469946322.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035309 + ... + 1035524.

It is an arithmetic number, because the mean of its divisors is an integer number (24159730).

Almost surely, 2^223649964 is an apocalyptic number.

It is an amenable number.

223649964 is an abundant number, since it is smaller than the sum of its proper divisors (356183556).

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

223649964 is a wasteful number, since it uses less digits than its factorization.

223649964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070846 (or 2070838 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 223649964 is about 14954.9310931211. The cubic root of 223649964 is about 607.0012855664.

It can be divided in two parts, 22 and 3649964, that multiplied together give a palindrome (80299208).

The spelling of 223649964 in words is "two hundred twenty-three million, six hundred forty-nine thousand, nine hundred sixty-four".