1606270666 has 96 divisors (see below), whose sum is σ = 3348535680. Its totient is φ = 567907200.

The previous prime is 1606270651. The next prime is 1606270669. The reversal of 1606270666 is 6660726061.

It is not an unprimeable number, because it can be changed into a prime (1606270669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 853915 + ... + 855793.

It is an arithmetic number, because the mean of its divisors is an integer number (34880580).

Almost surely, 2^1606270666 is an apocalyptic number.

1606270666 is an abundant number, since it is smaller than the sum of its proper divisors (1742265014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606270666 is a wasteful number, since it uses less digits than its factorization.

1606270666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1973 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1606270666 is about 40078.3066758066. The cubic root of 1606270666 is about 1171.1330650594.

It can be divided in two parts, 1606 and 270666, that added together give a palindrome (272272).

The spelling of 1606270666 in words is "one billion, six hundred six million, two hundred seventy thousand, six hundred sixty-six".