4563666 has 12 divisors (see below), whose sum is σ = 9887982. Its totient is φ = 1521216.

The previous prime is 4563661. The next prime is 4563679. The reversal of 4563666 is 6663654.

It can be written as a sum of positive squares in only one way, i.e., 4498641 + 65025 = 2121^2 + 255^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4563666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4563661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126751 + ... + 126786.

Almost surely, 2^4563666 is an apocalyptic number.

4563666 is an abundant number, since it is smaller than the sum of its proper divisors (5324316).

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

4563666 is a wasteful number, since it uses less digits than its factorization.

4563666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253545 (or 253542 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 4563666 is about 2136.2738588486. The cubic root of 4563666 is about 165.8713136299.

The spelling of 4563666 in words is "four million, five hundred sixty-three thousand, six hundred sixty-six".