63261863 has 4 divisors (see below), whose sum is σ = 72299280. Its totient is φ = 54224448.

The previous prime is 63261851. The next prime is 63261871. The reversal of 63261863 is 36816236.

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 63261863 - 2¹² = 63257767 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 (63261883) 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, 4518698 + ... + 4518711.

It is an arithmetic number, because the mean of its divisors is an integer number (18074820).

Almost surely, 2^63261863 is an apocalyptic number.

63261863 is a deficient number, since it is larger than the sum of its proper divisors (9037417).

63261863 is an equidigital number, since it uses as much as digits as its factorization.

63261863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9037416.

The product of its digits is 31104, while the sum is 35.

The square root of 63261863 is about 7953.7326457456. The cubic root of 63261863 is about 398.4562644491.

The spelling of 63261863 in words is "sixty-three million, two hundred sixty-one thousand, eight hundred sixty-three".