63666135 has 32 divisors (see below), whose sum is σ = 121894080. Its totient is φ = 31342464.

The previous prime is 63666079. The next prime is 63666149. The reversal of 63666135 is 53166636.

It is a happy number.

It is not a de Polignac number, because 63666135 - 2¹⁰ = 63665111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63666135.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16384 + ... + 19893.

It is an arithmetic number, because the mean of its divisors is an integer number (3809190).

Almost surely, 2^63666135 is an apocalyptic number.

63666135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63666135 is a deficient number, since it is larger than the sum of its proper divisors (58227945).

63666135 is a wasteful number, since it uses less digits than its factorization.

63666135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36304 (or 36298 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 63666135 is about 7979.1061529472. The cubic root of 63666135 is about 399.3032349174.

The spelling of 63666135 in words is "sixty-three million, six hundred sixty-six thousand, one hundred thirty-five".