63663271 has 4 divisors (see below), whose sum is σ = 72758032. Its totient is φ = 54568512.

The previous prime is 63663253. The next prime is 63663293. The reversal of 63663271 is 17236636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63663271 - 2⁷ = 63663143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63663211) 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, 4547370 + ... + 4547383.

It is an arithmetic number, because the mean of its divisors is an integer number (18189508).

Almost surely, 2^63663271 is an apocalyptic number.

63663271 is a deficient number, since it is larger than the sum of its proper divisors (9094761).

63663271 is an equidigital number, since it uses as much as digits as its factorization.

63663271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094760.

The product of its digits is 27216, while the sum is 34.

The square root of 63663271 is about 7978.9266822048. The cubic root of 63663271 is about 399.2972473197.

The spelling of 63663271 in words is "sixty-three million, six hundred sixty-three thousand, two hundred seventy-one".