3736661 has 4 divisors (see below), whose sum is σ = 3741024. Its totient is φ = 3732300.

The previous prime is 3736639. The next prime is 3736669. The reversal of 3736661 is 1666373.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3736661 - 2¹⁸ = 3474517 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 (3736669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (935256).

Almost surely, 2^3736661 is an apocalyptic number.

It is an amenable number.

3736661 is a deficient number, since it is larger than the sum of its proper divisors (4363).

3736661 is a wasteful number, since it uses less digits than its factorization.

3736661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362.

The product of its digits is 13608, while the sum is 32.

The square root of 3736661 is about 1933.0444899174. The cubic root of 3736661 is about 155.1771958958.

The spelling of 3736661 in words is "three million, seven hundred thirty-six thousand, six hundred sixty-one".