63138733 has 8 divisors (see below), whose sum is σ = 72417600. Its totient is φ = 53924640.

The previous prime is 63138727. The next prime is 63138737. The reversal of 63138733 is 33783136.

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

It is not a de Polignac number, because 63138733 - 2⁵ = 63138701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63138737) 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, 14083 + ... + 18016.

It is an arithmetic number, because the mean of its divisors is an integer number (9052200).

Almost surely, 2^63138733 is an apocalyptic number.

It is an amenable number.

63138733 is a deficient number, since it is larger than the sum of its proper divisors (9278867).

63138733 is a wasteful number, since it uses less digits than its factorization.

63138733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32387.

The product of its digits is 27216, while the sum is 34.

The square root of 63138733 is about 7945.9884847639. The cubic root of 63138733 is about 398.1975841921.

The spelling of 63138733 in words is "sixty-three million, one hundred thirty-eight thousand, seven hundred thirty-three".