63118642 has 4 divisors (see below), whose sum is σ = 94677966. Its totient is φ = 31559320.

The previous prime is 63118577. The next prime is 63118661. The reversal of 63118642 is 24681136.

It is a happy number.

63118642 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.

It can be written as a sum of positive squares in only one way, i.e., 42133081 + 20985561 = 6491^2 + 4581^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15779659 + ... + 15779662.

Almost surely, 2^63118642 is an apocalyptic number.

63118642 is a deficient number, since it is larger than the sum of its proper divisors (31559324).

63118642 is a wasteful number, since it uses less digits than its factorization.

63118642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31559323.

The product of its digits is 6912, while the sum is 31.

The square root of 63118642 is about 7944.7241613539. The cubic root of 63118642 is about 398.1553436846.

Adding to 63118642 its reverse (24681136), we get a palindrome (87799778).

The spelling of 63118642 in words is "sixty-three million, one hundred eighteen thousand, six hundred forty-two".