666666673370 has 8 divisors (see below), whose sum is σ = 1200000012084. Its totient is φ = 266666669344.

The previous prime is 666666673367. The next prime is 666666673381. The reversal of 666666673370 is 73376666666.

It is a happy number.

666666673370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 664484195281 + 2182478089 = 815159^2 + 46717^2 .

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

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, 33333333659 + ... + 33333333678.

Almost surely, 2^666666673370 is an apocalyptic number.

666666673370 is a deficient number, since it is larger than the sum of its proper divisors (533333338714).

666666673370 is a wasteful number, since it uses less digits than its factorization.

666666673370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66666667344.

The product of its (nonzero) digits is 123451776, while the sum is 62.

The spelling of 666666673370 in words is "six hundred sixty-six billion, six hundred sixty-six million, six hundred seventy-three thousand, three hundred seventy".