63868253 has 16 divisors (see below), whose sum is σ = 70552320. Its totient is φ = 57589056.

The previous prime is 63868247. The next prime is 63868271. The reversal of 63868253 is 35286836.

It is a cyclic number.

It is not a de Polignac number, because 63868253 - 2¹⁴ = 63851869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63868253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63868853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32075 + ... + 34007.

It is an arithmetic number, because the mean of its divisors is an integer number (4409520).

Almost surely, 2^63868253 is an apocalyptic number.

It is an amenable number.

63868253 is a deficient number, since it is larger than the sum of its proper divisors (6684067).

63868253 is a wasteful number, since it uses less digits than its factorization.

63868253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its digits is 207360, while the sum is 41.

The square root of 63868253 is about 7991.7615705175. The cubic root of 63868253 is about 399.7253385292.

The spelling of 63868253 in words is "sixty-three million, eight hundred sixty-eight thousand, two hundred fifty-three".