3698661 has 8 divisors (see below), whose sum is σ = 4946080. Its totient is φ = 2458512.

The previous prime is 3698659. The next prime is 3698663. The reversal of 3698661 is 1668963.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3698659) and next prime (3698663).

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

It is not a de Polignac number, because 3698661 - 2¹ = 3698659 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 (3698663) 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, 490 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (618260).

Almost surely, 2^3698661 is an apocalyptic number.

It is an amenable number.

3698661 is a deficient number, since it is larger than the sum of its proper divisors (1247419).

3698661 is a wasteful number, since it uses less digits than its factorization.

3698661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635.

The product of its digits is 46656, while the sum is 39.

The square root of 3698661 is about 1923.1903181953. The cubic root of 3698661 is about 154.6493774232.

The spelling of 3698661 in words is "three million, six hundred ninety-eight thousand, six hundred sixty-one".