726430668 has 12 divisors (see below), whose sum is σ = 1695004920. Its totient is φ = 242143552.

The previous prime is 726430651. The next prime is 726430669. The reversal of 726430668 is 866034627.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (726430669) 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, 30267933 + ... + 30267956.

It is an arithmetic number, because the mean of its divisors is an integer number (141250410).

Almost surely, 2^726430668 is an apocalyptic number.

It is an amenable number.

726430668 is an abundant number, since it is smaller than the sum of its proper divisors (968574252).

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

726430668 is a wasteful number, since it uses less digits than its factorization.

726430668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60535896 (or 60535894 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 726430668 is about 26952.3777800772. The cubic root of 726430668 is about 898.9414171080.

The spelling of 726430668 in words is "seven hundred twenty-six million, four hundred thirty thousand, six hundred sixty-eight".