3600661 has 8 divisors (see below), whose sum is σ = 3760344. Its totient is φ = 3444480.

The previous prime is 3600659. The next prime is 3600679. The reversal of 3600661 is 1660063.

It can be written as a sum of positive squares in 4 ways, for example, as 62500 + 3538161 = 250^2 + 1881^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3600661 - 2¹ = 3600659 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 (3600601) 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, 1345 + ... + 3001.

It is an arithmetic number, because the mean of its divisors is an integer number (470043).

Almost surely, 2^3600661 is an apocalyptic number.

It is an amenable number.

3600661 is a deficient number, since it is larger than the sum of its proper divisors (159683).

3600661 is a wasteful number, since it uses less digits than its factorization.

3600661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3600661 is about 1897.5407769005. The cubic root of 3600661 is about 153.2712660998.

The spelling of 3600661 in words is "three million, six hundred thousand, six hundred sixty-one".