4490666 has 4 divisors (see below), whose sum is σ = 6736002. Its totient is φ = 2245332.

The previous prime is 4490663. The next prime is 4490687. The reversal of 4490666 is 6660944.

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., 3500641 + 990025 = 1871^2 + 995^2 .

It is a super-2 number, since 2×4490666² = 40332162247112, which contains 22 as substring.

It is an Ulam number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (4490663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122665 + ... + 1122668.

Almost surely, 2^4490666 is an apocalyptic number.

4490666 is a deficient number, since it is larger than the sum of its proper divisors (2245336).

4490666 is a wasteful number, since it uses less digits than its factorization.

4490666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245335.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 4490666 is about 2119.1191566309. The cubic root of 4490666 is about 164.9821345824.

The spelling of 4490666 in words is "four million, four hundred ninety thousand, six hundred sixty-six".