3733661 has 4 divisors (see below), whose sum is σ = 3761052. Its totient is φ = 3706272.

The previous prime is 3733649. The next prime is 3733669. The reversal of 3733661 is 1663373.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2059225 + 1674436 = 1435^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3733661 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 (3733669) 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, 13490 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (940263).

Almost surely, 2^3733661 is an apocalyptic number.

It is an amenable number.

3733661 is a deficient number, since it is larger than the sum of its proper divisors (27391).

3733661 is a wasteful number, since it uses less digits than its factorization.

3733661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27390.

The product of its digits is 6804, while the sum is 29.

The square root of 3733661 is about 1932.2683561038. The cubic root of 3733661 is about 155.1356564725.

The spelling of 3733661 in words is "three million, seven hundred thirty-three thousand, six hundred sixty-one".