668004022 has 8 divisors (see below), whose sum is σ = 1145149776. Its totient is φ = 286287432.

The previous prime is 668004017. The next prime is 668004037. The reversal of 668004022 is 220400866.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23857273 + ... + 23857300.

It is an arithmetic number, because the mean of its divisors is an integer number (143143722).

Almost surely, 2^668004022 is an apocalyptic number.

668004022 is a deficient number, since it is larger than the sum of its proper divisors (477145754).

668004022 is a wasteful number, since it uses less digits than its factorization.

668004022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47714582.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 668004022 is about 25845.7737744491. The cubic root of 668004022 is about 874.1642183140.

Adding to 668004022 its reverse (220400866), we get a palindrome (888404888).

The spelling of 668004022 in words is "six hundred sixty-eight million, four thousand, twenty-two".