63244621 has 8 divisors (see below), whose sum is σ = 71373600. Its totient is φ = 55512240.

The previous prime is 63244561. The next prime is 63244627. The reversal of 63244621 is 12644236.

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 63244621 - 2²³ = 54856013 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 63244621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63244627) 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, 98811 + ... + 99448.

It is an arithmetic number, because the mean of its divisors is an integer number (8921700).

Almost surely, 2^63244621 is an apocalyptic number.

It is an amenable number.

63244621 is a deficient number, since it is larger than the sum of its proper divisors (8128979).

63244621 is a wasteful number, since it uses less digits than its factorization.

63244621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198299.

The product of its digits is 6912, while the sum is 28.

The square root of 63244621 is about 7952.6486782707. The cubic root of 63244621 is about 398.4200614518.

Adding to 63244621 its reverse (12644236), we get a palindrome (75888857).

The spelling of 63244621 in words is "sixty-three million, two hundred forty-four thousand, six hundred twenty-one".