63138753 has 6 divisors (see below), whose sum is σ = 91200434. Its totient is φ = 42092496.

The previous prime is 63138739. The next prime is 63138763. The reversal of 63138753 is 35783136.

It can be written as a sum of positive squares in only one way, i.e., 54066609 + 9072144 = 7353^2 + 3012^2 .

It is not a de Polignac number, because 63138753 - 2⁴ = 63138737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63138763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3507700 + ... + 3507717.

Almost surely, 2^63138753 is an apocalyptic number.

It is an amenable number.

63138753 is a deficient number, since it is larger than the sum of its proper divisors (28061681).

63138753 is a wasteful number, since it uses less digits than its factorization.

63138753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015423 (or 7015420 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 63138753 is about 7945.9897432604. The cubic root of 63138753 is about 398.1976262368.

The spelling of 63138753 in words is "sixty-three million, one hundred thirty-eight thousand, seven hundred fifty-three".