3644806 has 8 divisors (see below), whose sum is σ = 5964264. Its totient is φ = 1656720.

The previous prime is 3644801. The next prime is 3644831. The reversal of 3644806 is 6084463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3644806² = 26569221555272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644801) 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 in 3 ways as a sum of consecutive naturals, for example, 82815 + ... + 82858.

It is an arithmetic number, because the mean of its divisors is an integer number (745533).

Almost surely, 2^3644806 is an apocalyptic number.

3644806 is a deficient number, since it is larger than the sum of its proper divisors (2319458).

3644806 is a wasteful number, since it uses less digits than its factorization.

3644806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165686.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 3644806 is about 1909.1375015959. The cubic root of 3644806 is about 153.8951048205.

It can be divided in two parts, 3 and 644806, that added together give a square (644809 = 803²).

The spelling of 3644806 in words is "three million, six hundred forty-four thousand, eight hundred six".