3661804 has 6 divisors (see below), whose sum is σ = 6408164. Its totient is φ = 1830900.

The previous prime is 3661781. The next prime is 3661831. The reversal of 3661804 is 4081663.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457722 + ... + 457729.

Almost surely, 2^3661804 is an apocalyptic number.

It is an amenable number.

3661804 is a deficient number, since it is larger than the sum of its proper divisors (2746360).

3661804 is a wasteful number, since it uses less digits than its factorization.

3661804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915455 (or 915453 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3661804 is about 1913.5840718401. The cubic root of 3661804 is about 154.1339701133.

It can be divided in two parts, 3661 and 804, that added together give a triangular number (4465 = T₉₄).

The spelling of 3661804 in words is "three million, six hundred sixty-one thousand, eight hundred four".