76666163 has 4 divisors (see below), whose sum is σ = 87618480. Its totient is φ = 65713848.

The previous prime is 76666151. The next prime is 76666207. The reversal of 76666163 is 36166667.

It is a happy number.

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 76666163 - 2⁶ = 76666099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76666163.

It is not an unprimeable number, because it can be changed into a prime (76666663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5476148 + ... + 5476161.

It is an arithmetic number, because the mean of its divisors is an integer number (21904620).

Almost surely, 2^76666163 is an apocalyptic number.

76666163 is a deficient number, since it is larger than the sum of its proper divisors (10952317).

76666163 is a wasteful number, since it uses less digits than its factorization.

76666163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10952316.

The product of its digits is 163296, while the sum is 41.

The square root of 76666163 is about 8755.9215962684. The cubic root of 76666163 is about 424.8163691124.

The spelling of 76666163 in words is "seventy-six million, six hundred sixty-six thousand, one hundred sixty-three".