63875881 has 2 divisors, whose sum is σ = 63875882. Its totient is φ = 63875880.

The previous prime is 63875879. The next prime is 63875927. The reversal of 63875881 is 18857836.

It is an a-pointer prime, because the next prime (63875927) can be obtained adding 63875881 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53890281 + 9985600 = 7341^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 63875881 - 2¹ = 63875879 is a prime.

It is a super-2 number, since 2×63875881² = 8160256347052322, which contains 22 as substring.

Together with 63875879, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63872881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31937940 + 31937941.

It is an arithmetic number, because the mean of its divisors is an integer number (31937941).

Almost surely, 2^63875881 is an apocalyptic number.

It is an amenable number.

63875881 is a deficient number, since it is larger than the sum of its proper divisors (1).

63875881 is an equidigital number, since it uses as much as digits as its factorization.

63875881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 63875881 is about 7992.2387977337. The cubic root of 63875881 is about 399.7412514090.

The spelling of 63875881 in words is "sixty-three million, eight hundred seventy-five thousand, eight hundred eighty-one".