4561666 has 4 divisors (see below), whose sum is σ = 6842502. Its totient is φ = 2280832.

The previous prime is 4561663. The next prime is 4561723. The reversal of 4561666 is 6661654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4100625 + 461041 = 2025^2 + 679^2 .

It is not an unprimeable number, because it can be changed into a prime (4561663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140415 + ... + 1140418.

Almost surely, 2^4561666 is an apocalyptic number.

4561666 is a deficient number, since it is larger than the sum of its proper divisors (2280836).

4561666 is a wasteful number, since it uses less digits than its factorization.

4561666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280835.

The product of its digits is 25920, while the sum is 34.

The square root of 4561666 is about 2135.8057027735. The cubic root of 4561666 is about 165.8470793776.

The spelling of 4561666 in words is "four million, five hundred sixty-one thousand, six hundred sixty-six".