668367424 has 28 divisors (see below), whose sum is σ = 1327905904. Its totient is φ = 333777024.

The previous prime is 668367421. The next prime is 668367439. The reversal of 668367424 is 424763866.

668367424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668367421) 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, 50599 + ... + 62425.

Almost surely, 2^668367424 is an apocalyptic number.

668367424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

668367424 is a deficient number, since it is larger than the sum of its proper divisors (659538480).

668367424 is a wasteful number, since it uses less digits than its factorization.

668367424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12722 (or 12712 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 46.

The square root of 668367424 is about 25852.8030201756. The cubic root of 668367424 is about 874.3227080966.

The spelling of 668367424 in words is "six hundred sixty-eight million, three hundred sixty-seven thousand, four hundred twenty-four".