3698 has 6 divisors (see below), whose sum is σ = 5679. Its totient is φ = 1806.

The previous prime is 3697. The next prime is 3701. The reversal of 3698 is 8963.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1849 + 1849 = 43^2 + 43^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 3698.

It is not an unprimeable number, because it can be changed into a prime (3691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 65 + ... + 107.

2³⁶⁹⁸ is an apocalyptic number.

3698 is a deficient number, since it is larger than the sum of its proper divisors (1981).

3698 is an equidigital number, since it uses as much as digits as its factorization.

3698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 45 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 3698 is about 60.8111831820. The cubic root of 3698 is about 15.4640164240.

Adding to 3698 its product of digits (1296), we get a palindrome (4994).

The spelling of 3698 in words is "three thousand, six hundred ninety-eight".