666466422 has 16 divisors (see below), whose sum is σ = 1368958512. Its totient is φ = 216151200.

The previous prime is 666466393. The next prime is 666466433. The reversal of 666466422 is 224664666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500829 + ... + 1501272.

It is an arithmetic number, because the mean of its divisors is an integer number (85559907).

Almost surely, 2^666466422 is an apocalyptic number.

666466422 is an abundant number, since it is smaller than the sum of its proper divisors (702492090).

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

666466422 is a wasteful number, since it uses less digits than its factorization.

666466422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002143.

The product of its digits is 497664, while the sum is 42.

The square root of 666466422 is about 25816.0109621917. The cubic root of 666466422 is about 873.4929910632.

The spelling of 666466422 in words is "six hundred sixty-six million, four hundred sixty-six thousand, four hundred twenty-two".