523422666 has 48 divisors (see below), whose sum is σ = 1228901856. Its totient is φ = 160053408.

The previous prime is 523422643. The next prime is 523422751. The reversal of 523422666 is 666224325.

It is a self number, because there is not a number n which added to its sum of digits gives 523422666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 31281 + ... + 45003.

It is an arithmetic number, because the mean of its divisors is an integer number (25602122).

Almost surely, 2^523422666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523422666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614450928).

523422666 is an abundant number, since it is smaller than the sum of its proper divisors (705479190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523422666 is a wasteful number, since it uses less digits than its factorization.

523422666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13907 (or 13904 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 523422666 is about 22878.4323326578. The cubic root of 523422666 is about 805.9056027552.

The spelling of 523422666 in words is "five hundred twenty-three million, four hundred twenty-two thousand, six hundred sixty-six".