63660011 has 4 divisors (see below), whose sum is σ = 63778224. Its totient is φ = 63541800.

The previous prime is 63659989. The next prime is 63660031. The reversal of 63660011 is 11006636.

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 63660011 - 2¹⁴ = 63643627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63660031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58295 + ... + 59376.

It is an arithmetic number, because the mean of its divisors is an integer number (15944556).

Almost surely, 2^63660011 is an apocalyptic number.

63660011 is a deficient number, since it is larger than the sum of its proper divisors (118213).

63660011 is a wasteful number, since it uses less digits than its factorization.

63660011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118212.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 63660011 is about 7978.7223914609. The cubic root of 63660011 is about 399.2904316094.

Adding to 63660011 its reverse (11006636), we get a palindrome (74666647).

The spelling of 63660011 in words is "sixty-three million, six hundred sixty thousand, eleven".