3145666 has 8 divisors (see below), whose sum is σ = 4846140. Its totient is φ = 1530288.

The previous prime is 3145661. The next prime is 3145669. The reversal of 3145666 is 6665413.

It can be written as a sum of positive squares in 2 ways, for example, as 2387025 + 758641 = 1545^2 + 871^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3145661) 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, 21181 + ... + 21328.

Almost surely, 2^3145666 is an apocalyptic number.

3145666 is a deficient number, since it is larger than the sum of its proper divisors (1700474).

3145666 is a wasteful number, since it uses less digits than its factorization.

3145666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42548.

The product of its digits is 12960, while the sum is 31.

The square root of 3145666 is about 1773.6025484871. The cubic root of 3145666 is about 146.5224604173.

The spelling of 3145666 in words is "three million, one hundred forty-five thousand, six hundred sixty-six".