63918706 has 8 divisors (see below), whose sum is σ = 95913180. Its totient is φ = 31947648.

The previous prime is 63918703. The next prime is 63918707. The reversal of 63918706 is 60781936.

It can be written as a sum of positive squares in 2 ways, for example, as 63441225 + 477481 = 7965^2 + 691^2 .

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

It is not an unprimeable number, because it can be changed into a prime (63918703) 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, 4990 + ... + 12358.

Almost surely, 2^63918706 is an apocalyptic number.

63918706 is a deficient number, since it is larger than the sum of its proper divisors (31994474).

63918706 is a wasteful number, since it uses less digits than its factorization.

63918706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11708.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 63918706 is about 7994.9175105188. The cubic root of 63918706 is about 399.8305657402.

The spelling of 63918706 in words is "sixty-three million, nine hundred eighteen thousand, seven hundred six".