63666089 has 4 divisors (see below), whose sum is σ = 63719040. Its totient is φ = 63613140.

The previous prime is 63666079. The next prime is 63666149. The reversal of 63666089 is 98066636.

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 a de Polignac number, because none of the positive numbers 2^k-63666089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63666019) 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, 24629 + ... + 27090.

It is an arithmetic number, because the mean of its divisors is an integer number (15929760).

Almost surely, 2^63666089 is an apocalyptic number.

It is an amenable number.

63666089 is a deficient number, since it is larger than the sum of its proper divisors (52951).

63666089 is a wasteful number, since it uses less digits than its factorization.

63666089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52950.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 63666089 is about 7979.1032704183. The cubic root of 63666089 is about 399.3031387493.

The spelling of 63666089 in words is "sixty-three million, six hundred sixty-six thousand, eighty-nine".