63624421 has 8 divisors (see below), whose sum is σ = 76991040. Its totient is φ = 51327168.

The previous prime is 63624419. The next prime is 63624437. The reversal of 63624421 is 12442636.

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 63624421 - 2¹ = 63624419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63624421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63624401) 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, 267211 + ... + 267448.

It is an arithmetic number, because the mean of its divisors is an integer number (9623880).

Almost surely, 2^63624421 is an apocalyptic number.

It is an amenable number.

63624421 is a deficient number, since it is larger than the sum of its proper divisors (13366619).

63624421 is a wasteful number, since it uses less digits than its factorization.

63624421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534683.

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

The square root of 63624421 is about 7976.4917727031. The cubic root of 63624421 is about 399.2160081458.

The spelling of 63624421 in words is "sixty-three million, six hundred twenty-four thousand, four hundred twenty-one".