63263891 has 8 divisors (see below), whose sum is σ = 63880800. Its totient is φ = 62650368.

The previous prime is 63263887. The next prime is 63263899. The reversal of 63263891 is 19836236.

63263891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63263891 - 2² = 63263887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63263899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50525 + ... + 51761.

It is an arithmetic number, because the mean of its divisors is an integer number (7985100).

Almost surely, 2^63263891 is an apocalyptic number.

63263891 is a deficient number, since it is larger than the sum of its proper divisors (616909).

63263891 is a wasteful number, since it uses less digits than its factorization.

63263891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693.

The product of its digits is 46656, while the sum is 38.

The square root of 63263891 is about 7953.8601320365. The cubic root of 63263891 is about 398.4605222048.

The spelling of 63263891 in words is "sixty-three million, two hundred sixty-three thousand, eight hundred ninety-one".