63699914 has 4 divisors (see below), whose sum is σ = 95549874. Its totient is φ = 31849956.

The previous prime is 63699907. The next prime is 63699919. The reversal of 63699914 is 41999636.

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., 59799289 + 3900625 = 7733^2 + 1975^2 .

It is not an unprimeable number, because it can be changed into a prime (63699919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15924977 + ... + 15924980.

Almost surely, 2^63699914 is an apocalyptic number.

63699914 is a deficient number, since it is larger than the sum of its proper divisors (31849960).

63699914 is a wasteful number, since it uses less digits than its factorization.

63699914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31849959.

The product of its digits is 314928, while the sum is 47.

The square root of 63699914 is about 7981.2225880500. Note that the first 3 decimals coincide. The cubic root of 63699914 is about 399.3738411576.

The spelling of 63699914 in words is "sixty-three million, six hundred ninety-nine thousand, nine hundred fourteen".