726370666 has 16 divisors (see below), whose sum is σ = 1248174720. Its totient is φ = 310559760.

The previous prime is 726370621. The next prime is 726370681. The reversal of 726370666 is 666073627.

726370666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×726370666² = 1055228688850567112, which contains 22 as substring.

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, 55726 + ... + 67513.

It is an arithmetic number, because the mean of its divisors is an integer number (78010920).

Almost surely, 2^726370666 is an apocalyptic number.

726370666 is a deficient number, since it is larger than the sum of its proper divisors (521804054).

726370666 is a wasteful number, since it uses less digits than its factorization.

726370666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123669.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 726370666 is about 26951.2646456525. The cubic root of 726370666 is about 898.9166660567.

The spelling of 726370666 in words is "seven hundred twenty-six million, three hundred seventy thousand, six hundred sixty-six".