63138977 has 4 divisors (see below), whose sum is σ = 68878896. Its totient is φ = 57399060.

The previous prime is 63138967. The next prime is 63138997. The reversal of 63138977 is 77983136.

63138977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63138977 - 2⁴ = 63138961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63138917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2869943 + ... + 2869964.

It is an arithmetic number, because the mean of its divisors is an integer number (17219724).

Almost surely, 2^63138977 is an apocalyptic number.

It is an amenable number.

63138977 is a deficient number, since it is larger than the sum of its proper divisors (5739919).

63138977 is a wasteful number, since it uses less digits than its factorization.

63138977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739918.

The product of its digits is 190512, while the sum is 44.

The square root of 63138977 is about 7946.0038384083. The cubic root of 63138977 is about 398.1980971371.

The spelling of 63138977 in words is "sixty-three million, one hundred thirty-eight thousand, nine hundred seventy-seven".