63149986 has 8 divisors (see below), whose sum is σ = 95216364. Its totient is φ = 31411200.

The previous prime is 63149903. The next prime is 63149987. The reversal of 63149986 is 68994136.

It can be written as a sum of positive squares in 2 ways, for example, as 62964225 + 185761 = 7935^2 + 431^2 .

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 (63149987) 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, 81415 + ... + 82186.

Almost surely, 2^63149986 is an apocalyptic number.

63149986 is a deficient number, since it is larger than the sum of its proper divisors (32066378).

63149986 is a wasteful number, since it uses less digits than its factorization.

63149986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163796.

The product of its digits is 279936, while the sum is 46.

The square root of 63149986 is about 7946.6965463644. The cubic root of 63149986 is about 398.2212392504.

The spelling of 63149986 in words is "sixty-three million, one hundred forty-nine thousand, nine hundred eighty-six".