1166664423 has 8 divisors (see below), whose sum is σ = 1647055728. Its totient is φ = 732024704.

The previous prime is 1166664419. The next prime is 1166664431. The reversal of 1166664423 is 3244666611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166664423 - 2² = 1166664419 is a prime.

It is a super-2 number, since 2×1166664423² = 2722211751787845858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166664413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11437836 + ... + 11437937.

It is an arithmetic number, because the mean of its divisors is an integer number (205881966).

Almost surely, 2^1166664423 is an apocalyptic number.

1166664423 is a deficient number, since it is larger than the sum of its proper divisors (480391305).

1166664423 is a wasteful number, since it uses less digits than its factorization.

1166664423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22875793.

The product of its digits is 124416, while the sum is 39.

The square root of 1166664423 is about 34156.4697092659. The cubic root of 1166664423 is about 1052.7259247611.

The spelling of 1166664423 in words is "one billion, one hundred sixty-six million, six hundred sixty-four thousand, four hundred twenty-three".