63806901 has 4 divisors (see below), whose sum is σ = 85075872. Its totient is φ = 42537932.

The previous prime is 63806887. The next prime is 63806909. The reversal of 63806901 is 10960836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63806901 - 2⁶ = 63806837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63806909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10634481 + ... + 10634486.

It is an arithmetic number, because the mean of its divisors is an integer number (21268968).

Almost surely, 2^63806901 is an apocalyptic number.

It is an amenable number.

63806901 is a deficient number, since it is larger than the sum of its proper divisors (21268971).

63806901 is a wasteful number, since it uses less digits than its factorization.

63806901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21268970.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 63806901 is about 7987.9221954148. The cubic root of 63806901 is about 399.5973051448.

The spelling of 63806901 in words is "sixty-three million, eight hundred six thousand, nine hundred one".