3661693 has 8 divisors (see below), whose sum is σ = 4196480. Its totient is φ = 3129840.

The previous prime is 3661673. The next prime is 3661703. The reversal of 3661693 is 3961663.

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 3661693 - 2⁹ = 3661181 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 (3661633) 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, 4003 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (524560).

Almost surely, 2^3661693 is an apocalyptic number.

It is an amenable number.

3661693 is a deficient number, since it is larger than the sum of its proper divisors (534787).

3661693 is an equidigital number, since it uses as much as digits as its factorization.

3661693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467.

The product of its digits is 17496, while the sum is 34.

The square root of 3661693 is about 1913.5550684524. Note that the first 3 decimals coincide. The cubic root of 3661693 is about 154.1324126803.

The spelling of 3661693 in words is "three million, six hundred sixty-one thousand, six hundred ninety-three".