63668439 has 12 divisors (see below), whose sum is σ = 95964336. Its totient is φ = 40600032.

The previous prime is 63668431. The next prime is 63668443. The reversal of 63668439 is 93486636.

63668439 is a `hidden beast` number, since 636 + 6 + 8 + 4 + 3 + 9 = 666.

It is not a de Polignac number, because 63668439 - 2³ = 63668431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63668394 and 63668403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63668431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153582 + ... + 153995.

It is an arithmetic number, because the mean of its divisors is an integer number (7997028).

Almost surely, 2^63668439 is an apocalyptic number.

63668439 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

63668439 is a deficient number, since it is larger than the sum of its proper divisors (32295897).

63668439 is a wasteful number, since it uses less digits than its factorization.

63668439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307606 (or 307603 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 63668439 is about 7979.2505287151. The cubic root of 63668439 is about 399.3080516255.

The spelling of 63668439 in words is "sixty-three million, six hundred sixty-eight thousand, four hundred thirty-nine".