3661699 has 6 divisors (see below), whose sum is σ = 3863220. Its totient is φ = 3461076.

The previous prime is 3661673. The next prime is 3661703. The reversal of 3661699 is 9961663.

It is a happy number.

It is not a de Polignac number, because 3661699 - 2¹¹ = 3659651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3661649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8122 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (643870).

Almost surely, 2^3661699 is an apocalyptic number.

3661699 is a deficient number, since it is larger than the sum of its proper divisors (201521).

3661699 is an frugal number, since it uses more digits than its factorization.

3661699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 458 counting only the distinct ones).

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

The square root of 3661699 is about 1913.5566362144. The cubic root of 3661699 is about 154.1324968667.

The spelling of 3661699 in words is "three million, six hundred sixty-one thousand, six hundred ninety-nine".