63138611 has 4 divisors (see below), whose sum is σ = 65883792. Its totient is φ = 60393432.

The previous prime is 63138583. The next prime is 63138631. The reversal of 63138611 is 11683136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63138611 - 2⁶ = 63138547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63138631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372556 + ... + 1372601.

It is an arithmetic number, because the mean of its divisors is an integer number (16470948).

Almost surely, 2^63138611 is an apocalyptic number.

63138611 is a deficient number, since it is larger than the sum of its proper divisors (2745181).

63138611 is a wasteful number, since it uses less digits than its factorization.

63138611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745180.

The product of its digits is 2592, while the sum is 29.

The square root of 63138611 is about 7945.9808079305. The cubic root of 63138611 is about 398.1973277191.

The spelling of 63138611 in words is "sixty-three million, one hundred thirty-eight thousand, six hundred eleven".