224864639 has 8 divisors (see below), whose sum is σ = 237072000. Its totient is φ = 212694552.

The previous prime is 224864621. The next prime is 224864659. The reversal of 224864639 is 936468422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 224864639 - 2⁸ = 224864383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224864639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224864659) 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, 3542 + ... + 21500.

It is an arithmetic number, because the mean of its divisors is an integer number (29634000).

Almost surely, 2^224864639 is an apocalyptic number.

224864639 is a deficient number, since it is larger than the sum of its proper divisors (12207361).

224864639 is a wasteful number, since it uses less digits than its factorization.

224864639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18637.

The product of its digits is 497664, while the sum is 44.

The square root of 224864639 is about 14995.4872878476. The cubic root of 224864639 is about 608.0982057650.

The spelling of 224864639 in words is "two hundred twenty-four million, eight hundred sixty-four thousand, six hundred thirty-nine".