660443794 has 8 divisors (see below), whose sum is σ = 1013704560. Its totient is φ = 322542276.

The previous prime is 660443789. The next prime is 660443801. The reversal of 660443794 is 497344066.

660443794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×660443794² = 872372010066228872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 660443794.

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, 3839704 + ... + 3839875.

It is an arithmetic number, because the mean of its divisors is an integer number (126713070).

Almost surely, 2^660443794 is an apocalyptic number.

660443794 is a deficient number, since it is larger than the sum of its proper divisors (353260766).

660443794 is a wasteful number, since it uses less digits than its factorization.

660443794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679624.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 660443794 is about 25699.1010348611. The cubic root of 660443794 is about 870.8538734429.

The spelling of 660443794 in words is "six hundred sixty million, four hundred forty-three thousand, seven hundred ninety-four".