63668205 has 12 divisors (see below), whose sum is σ = 110358300. Its totient is φ = 33956352.

The previous prime is 63668167. The next prime is 63668207. The reversal of 63668205 is 50286636.

It can be written as a sum of positive squares in 2 ways, for example, as 40106889 + 23561316 = 6333^2 + 4854^2 .

It is not a de Polignac number, because 63668205 - 2⁹ = 63667693 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63668205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63668207) 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, 707380 + ... + 707469.

It is an arithmetic number, because the mean of its divisors is an integer number (9196525).

Almost surely, 2^63668205 is an apocalyptic number.

It is an amenable number.

63668205 is a deficient number, since it is larger than the sum of its proper divisors (46690095).

63668205 is a wasteful number, since it uses less digits than its factorization.

63668205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414860 (or 1414857 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 63668205 is about 7979.2358656703. The cubic root of 63668205 is about 399.3075624339.

The spelling of 63668205 in words is "sixty-three million, six hundred sixty-eight thousand, two hundred five".