63215863 has 2 divisors, whose sum is σ = 63215864. Its totient is φ = 63215862.

The previous prime is 63215861. The next prime is 63215897. The reversal of 63215863 is 36851236.

It is an a-pointer prime, because the next prime (63215897) can be obtained adding 63215863 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63215863 - 2¹ = 63215861 is a prime.

Together with 63215861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63215861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31607931 + 31607932.

It is an arithmetic number, because the mean of its divisors is an integer number (31607932).

Almost surely, 2^63215863 is an apocalyptic number.

63215863 is a deficient number, since it is larger than the sum of its proper divisors (1).

63215863 is an equidigital number, since it uses as much as digits as its factorization.

63215863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 63215863 is about 7950.8403958324. The cubic root of 63215863 is about 398.3596636871.

The spelling of 63215863 in words is "sixty-three million, two hundred fifteen thousand, eight hundred sixty-three".