160666666 has 8 divisors (see below), whose sum is σ = 241054884. Its totient is φ = 80315040.

The previous prime is 160666663. The next prime is 160666697. The reversal of 160666666 is 666666061.

It can be written as a sum of positive squares in 2 ways, for example, as 141491025 + 19175641 = 11895^2 + 4379^2 .

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

160666666 is a modest number, since divided by 66666 gives 1606 as remainder.

It is not an unprimeable number, because it can be changed into a prime (160666663) 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, 9156 + ... + 20128.

Almost surely, 2^160666666 is an apocalyptic number.

160666666 is a deficient number, since it is larger than the sum of its proper divisors (80388218).

160666666 is a wasteful number, since it uses less digits than its factorization.

160666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18296.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 160666666 is about 12675.4355349234. The cubic root of 160666666 is about 543.6364826490.

The spelling of 160666666 in words is "one hundred sixty million, six hundred sixty-six thousand, six hundred sixty-six".