63993213 has 16 divisors (see below), whose sum is σ = 95308800. Its totient is φ = 42435360.

The previous prime is 63993191. The next prime is 63993221. The reversal of 63993213 is 31239936.

It is a happy number.

63993213 is a `hidden beast` number, since 639 + 9 + 3 + 2 + 13 = 666.

It is not a de Polignac number, because 63993213 - 2¹⁰ = 63992189 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63993233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048 + ... + 11361.

It is an arithmetic number, because the mean of its divisors is an integer number (5956800).

Almost surely, 2^63993213 is an apocalyptic number.

It is an amenable number.

63993213 is a deficient number, since it is larger than the sum of its proper divisors (31315587).

63993213 is a wasteful number, since it uses less digits than its factorization.

63993213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12609 (or 12603 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 63993213 is about 7999.5758012535. The cubic root of 63993213 is about 399.9858599168.

The spelling of 63993213 in words is "sixty-three million, nine hundred ninety-three thousand, two hundred thirteen".