3803661 has 12 divisors (see below), whose sum is σ = 5552092. Its totient is φ = 2509056.

The previous prime is 3803659. The next prime is 3803677. The reversal of 3803661 is 1663083.

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 670761 = 1770^2 + 819^2 .

It is not a de Polignac number, because 3803661 - 2¹ = 3803659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3803621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1306 + ... + 3051.

Almost surely, 2^3803661 is an apocalyptic number.

It is an amenable number.

3803661 is a deficient number, since it is larger than the sum of its proper divisors (1748431).

3803661 is a wasteful number, since it uses less digits than its factorization.

3803661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3803661 is about 1950.2976695879. The cubic root of 3803661 is about 156.0991726406.

The spelling of 3803661 in words is "three million, eight hundred three thousand, six hundred sixty-one".