63668231 has 16 divisors (see below), whose sum is σ = 71705088. Its totient is φ = 56023200.

The previous prime is 63668219. The next prime is 63668239. The reversal of 63668231 is 13286636.

It is a cyclic number.

It is not a de Polignac number, because 63668231 - 2⁶ = 63668167 is a prime.

It is a super-2 number, since 2×63668231² = 8107287277338722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63668191 and 63668200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63668239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126326 + ... + 126828.

It is an arithmetic number, because the mean of its divisors is an integer number (4481568).

Almost surely, 2^63668231 is an apocalyptic number.

63668231 is a deficient number, since it is larger than the sum of its proper divisors (8036857).

63668231 is a wasteful number, since it uses less digits than its factorization.

63668231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its digits is 31104, while the sum is 35.

The square root of 63668231 is about 7979.2374948989. The cubic root of 63668231 is about 399.3076167886.

The spelling of 63668231 in words is "sixty-three million, six hundred sixty-eight thousand, two hundred thirty-one".