4578866 has 4 divisors (see below), whose sum is σ = 6868302. Its totient is φ = 2289432.

The previous prime is 4578857. The next prime is 4578869. The reversal of 4578866 is 6688754.

4578866 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6688754 = 2 ⋅3344377.

It can be written as a sum of positive squares in only one way, i.e., 4532641 + 46225 = 2129^2 + 215^2 .

It is not an unprimeable number, because it can be changed into a prime (4578869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144715 + ... + 1144718.

Almost surely, 2^4578866 is an apocalyptic number.

4578866 is a deficient number, since it is larger than the sum of its proper divisors (2289436).

4578866 is a wasteful number, since it uses less digits than its factorization.

4578866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289435.

The product of its digits is 322560, while the sum is 44.

The square root of 4578866 is about 2139.8284978007. The cubic root of 4578866 is about 166.0552629668.

It can be divided in two parts, 45788 and 66, that added together give a palindrome (45854).

The spelling of 4578866 in words is "four million, five hundred seventy-eight thousand, eight hundred sixty-six".