3662661 has 8 divisors (see below), whose sum is σ = 4966560. Its totient is φ = 2400272.

The previous prime is 3662657. The next prime is 3662683. The reversal of 3662661 is 1662663.

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 3662661 - 2² = 3662657 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3662621) 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 7 ways as a sum of consecutive naturals, for example, 10170 + ... + 10523.

It is an arithmetic number, because the mean of its divisors is an integer number (620820).

Almost surely, 2^3662661 is an apocalyptic number.

It is an amenable number.

3662661 is a deficient number, since it is larger than the sum of its proper divisors (1303899).

3662661 is a wasteful number, since it uses less digits than its factorization.

3662661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20755.

The product of its digits is 7776, while the sum is 30.

The square root of 3662661 is about 1913.8079840987. The cubic root of 3662661 is about 154.1459935594.

The spelling of 3662661 in words is "three million, six hundred sixty-two thousand, six hundred sixty-one".