4213666 has 4 divisors (see below), whose sum is σ = 6320502. Its totient is φ = 2106832.

The previous prime is 4213639. The next prime is 4213673. The reversal of 4213666 is 6663124.

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., 3441025 + 772641 = 1855^2 + 879^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053415 + ... + 1053418.

Almost surely, 2^4213666 is an apocalyptic number.

4213666 is a deficient number, since it is larger than the sum of its proper divisors (2106836).

4213666 is a wasteful number, since it uses less digits than its factorization.

4213666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106835.

The product of its digits is 5184, while the sum is 28.

The square root of 4213666 is about 2052.7216080122. The cubic root of 4213666 is about 161.5176681300.

The spelling of 4213666 in words is "four million, two hundred thirteen thousand, six hundred sixty-six".