3634661 has 8 divisors (see below), whose sum is σ = 3747744. Its totient is φ = 3522960.

The previous prime is 3634639. The next prime is 3634663. The reversal of 3634661 is 1664363.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3634661 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 (3634663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7550 + ... + 8016.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^3634661 is an apocalyptic number.

It is an amenable number.

3634661 is a deficient number, since it is larger than the sum of its proper divisors (113083).

3634661 is a wasteful number, since it uses less digits than its factorization.

3634661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its digits is 7776, while the sum is 29.

The square root of 3634661 is about 1906.4786912001. The cubic root of 3634661 is about 153.7521875997.

The spelling of 3634661 in words is "three million, six hundred thirty-four thousand, six hundred sixty-one".