3106666 has 4 divisors (see below), whose sum is σ = 4660002. Its totient is φ = 1553332.

The previous prime is 3106657. The next prime is 3106667. The reversal of 3106666 is 6666013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6666013 = 1583 ⋅4211.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 594441 = 1585^2 + 771^2 .

3106666 is a modest number, since divided by 6666 gives 310 as remainder.

It is not an unprimeable number, because it can be changed into a prime (3106667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776665 + ... + 776668.

Almost surely, 2^3106666 is an apocalyptic number.

3106666 is a deficient number, since it is larger than the sum of its proper divisors (1553336).

3106666 is a wasteful number, since it uses less digits than its factorization.

3106666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553335.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3106666 is about 1762.5736864029. The cubic root of 3106666 is about 145.9144115862.

The spelling of 3106666 in words is "three million, one hundred six thousand, six hundred sixty-six".