3643834 has 16 divisors (see below), whose sum is σ = 5755176. Its totient is φ = 1728000.

The previous prime is 3643819. The next prime is 3643841. The reversal of 3643834 is 4383463.

It can be written as a sum of positive squares in 4 ways, for example, as 1697809 + 1946025 = 1303^2 + 1395^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3643796 and 3643805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434 + ... + 3634.

Almost surely, 2^3643834 is an apocalyptic number.

3643834 is a deficient number, since it is larger than the sum of its proper divisors (2111342).

3643834 is a wasteful number, since it uses less digits than its factorization.

3643834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281.

The product of its digits is 20736, while the sum is 31.

The square root of 3643834 is about 1908.8829194060. The cubic root of 3643834 is about 153.8814233112.

The spelling of 3643834 in words is "three million, six hundred forty-three thousand, eight hundred thirty-four".