666922063 has 4 divisors (see below), whose sum is σ = 671398200. Its totient is φ = 662445928.

The previous prime is 666922051. The next prime is 666922079. The reversal of 666922063 is 360229666.

666922063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666922063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666922043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2237845 + ... + 2238142.

It is an arithmetic number, because the mean of its divisors is an integer number (167849550).

Almost surely, 2^666922063 is an apocalyptic number.

666922063 is a deficient number, since it is larger than the sum of its proper divisors (4476137).

666922063 is a wasteful number, since it uses less digits than its factorization.

666922063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476136.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 666922063 is about 25824.8342298649. The cubic root of 666922063 is about 873.6920051178.

The spelling of 666922063 in words is "six hundred sixty-six million, nine hundred twenty-two thousand, sixty-three".