66653163 has 12 divisors (see below), whose sum is σ = 97130280. Its totient is φ = 44041536.

The previous prime is 66653143. The next prime is 66653179. The reversal of 66653163 is 36135666.

It is a happy number.

It is not a de Polignac number, because 66653163 - 2⁶ = 66653099 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66653113) 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 11 ways as a sum of consecutive naturals, for example, 31753 + ... + 33786.

It is an arithmetic number, because the mean of its divisors is an integer number (8094190).

Almost surely, 2^66653163 is an apocalyptic number.

66653163 is a deficient number, since it is larger than the sum of its proper divisors (30477117).

66653163 is a wasteful number, since it uses less digits than its factorization.

66653163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65658 (or 65655 counting only the distinct ones).

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

The square root of 66653163 is about 8164.1388400737. The cubic root of 66653163 is about 405.4527538468.

The spelling of 66653163 in words is "sixty-six million, six hundred fifty-three thousand, one hundred sixty-three".