160666690 has 16 divisors (see below), whose sum is σ = 289344960. Its totient is φ = 64234480.

The previous prime is 160666663. The next prime is 160666697. The reversal of 160666690 is 96666061.

It is a happy number.

160666690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×160666690² = 51627570551112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (160666697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34395 + ... + 38785.

It is an arithmetic number, because the mean of its divisors is an integer number (18084060).

Almost surely, 2^160666690 is an apocalyptic number.

160666690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

160666690 is a deficient number, since it is larger than the sum of its proper divisors (128678270).

160666690 is a wasteful number, since it uses less digits than its factorization.

160666690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 160666690 is about 12675.4364816364. The cubic root of 160666690 is about 543.6365097180.

The spelling of 160666690 in words is "one hundred sixty million, six hundred sixty-six thousand, six hundred ninety".