3663266 has 4 divisors (see below), whose sum is σ = 5494902. Its totient is φ = 1831632.

The previous prime is 3663263. The next prime is 3663271. The reversal of 3663266 is 6623663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6623663 = 47 ⋅140929.

It can be written as a sum of positive squares in only one way, i.e., 1918225 + 1745041 = 1385^2 + 1321^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915815 + ... + 915818.

Almost surely, 2^3663266 is an apocalyptic number.

3663266 is a deficient number, since it is larger than the sum of its proper divisors (1831636).

3663266 is a wasteful number, since it uses less digits than its factorization.

3663266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831635.

The product of its digits is 23328, while the sum is 32.

The square root of 3663266 is about 1913.9660394061. The cubic root of 3663266 is about 154.1544803938.

The spelling of 3663266 in words is "three million, six hundred sixty-three thousand, two hundred sixty-six".