3699661 has 8 divisors (see below), whose sum is σ = 4450880. Its totient is φ = 3004128.

The previous prime is 3699629. The next prime is 3699671. The reversal of 3699661 is 1669963.

It is a happy number.

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

It is not a de Polignac number, because 3699661 - 2⁵ = 3699629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3699601) 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, 13776 + ... + 14041.

It is an arithmetic number, because the mean of its divisors is an integer number (556360).

Almost surely, 2^3699661 is an apocalyptic number.

It is an amenable number.

3699661 is a deficient number, since it is larger than the sum of its proper divisors (751219).

3699661 is a wasteful number, since it uses less digits than its factorization.

3699661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27843.

The product of its digits is 52488, while the sum is 40.

The square root of 3699661 is about 1923.4502852946. The cubic root of 3699661 is about 154.6633135875.

The spelling of 3699661 in words is "three million, six hundred ninety-nine thousand, six hundred sixty-one".