63384021 has 24 divisors (see below), whose sum is σ = 97770816. Its totient is φ = 39473280.

The previous prime is 63384011. The next prime is 63384023. The reversal of 63384021 is 12048336.

It is a happy number.

63384021 is a `hidden beast` number, since 633 + 8 + 4 + 0 + 21 = 666.

It is not a de Polignac number, because 63384021 - 2⁵ = 63383989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63384023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5341 + ... + 12461.

It is an arithmetic number, because the mean of its divisors is an integer number (4073784).

Almost surely, 2^63384021 is an apocalyptic number.

It is an amenable number.

63384021 is a deficient number, since it is larger than the sum of its proper divisors (34386795).

63384021 is a wasteful number, since it uses less digits than its factorization.

63384021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193 (or 7190 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 63384021 is about 7961.4082297041. The cubic root of 63384021 is about 398.7125711798.

The spelling of 63384021 in words is "sixty-three million, three hundred eighty-four thousand, twenty-one".