668724382 has 8 divisors (see below), whose sum is σ = 1003199400. Its totient is φ = 334324584.

The previous prime is 668724377. The next prime is 668724383. The reversal of 668724382 is 283427866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668724383) 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, 17244 + ... + 40432.

It is an arithmetic number, because the mean of its divisors is an integer number (125399925).

Almost surely, 2^668724382 is an apocalyptic number.

668724382 is a deficient number, since it is larger than the sum of its proper divisors (334475018).

668724382 is a wasteful number, since it uses less digits than its factorization.

668724382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37610.

The product of its digits is 774144, while the sum is 46.

The square root of 668724382 is about 25859.7057601203. The cubic root of 668724382 is about 874.4783315504.

The spelling of 668724382 in words is "six hundred sixty-eight million, seven hundred twenty-four thousand, three hundred eighty-two".