3643846 has 4 divisors (see below), whose sum is σ = 5465772. Its totient is φ = 1821922.

The previous prime is 3643841. The next prime is 3643853. The reversal of 3643846 is 6483463.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×3643846² = 26555227343432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643841) 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, 910960 + ... + 910963.

It is an arithmetic number, because the mean of its divisors is an integer number (1366443).

Almost surely, 2^3643846 is an apocalyptic number.

3643846 is a deficient number, since it is larger than the sum of its proper divisors (1821926).

3643846 is a wasteful number, since it uses less digits than its factorization.

3643846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821925.

The product of its digits is 41472, while the sum is 34.

The square root of 3643846 is about 1908.8860626030. The cubic root of 3643846 is about 153.8815922336.

It can be divided in two parts, 3643 and 846, that added together give a square (4489 = 67²).

The spelling of 3643846 in words is "three million, six hundred forty-three thousand, eight hundred forty-six".