63671 has 2 divisors, whose sum is σ = 63672. Its totient is φ = 63670.

The previous prime is 63667. The next prime is 63689. The reversal of 63671 is 17636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63671 - 2² = 63667 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63601) 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 as a sum of consecutive naturals, namely, 31835 + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (31836).

2⁶³⁶⁷¹ is an apocalyptic number.

63671 is a deficient number, since it is larger than the sum of its proper divisors (1).

63671 is an equidigital number, since it uses as much as digits as its factorization.

63671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 23.

The square root of 63671 is about 252.3311316505. The cubic root of 63671 is about 39.9313405478.

It can be divided in two parts, 636 and 71, that added together give a palindrome (707).

The spelling of 63671 in words is "sixty-three thousand, six hundred seventy-one".