3698687 has 4 divisors (see below), whose sum is σ = 3705576. Its totient is φ = 3691800.

The previous prime is 3698683. The next prime is 3698693. The reversal of 3698687 is 7868963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7868963 = 53 ⋅148471.

It is a cyclic number.

It is not a de Polignac number, because 3698687 - 2² = 3698683 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 (3698683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2564 + ... + 3737.

It is an arithmetic number, because the mean of its divisors is an integer number (926394).

Almost surely, 2^3698687 is an apocalyptic number.

3698687 is a deficient number, since it is larger than the sum of its proper divisors (6889).

3698687 is an equidigital number, since it uses as much as digits as its factorization.

3698687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888.

The product of its digits is 435456, while the sum is 47.

The square root of 3698687 is about 1923.1970777848. The cubic root of 3698687 is about 154.6497397952.

It can be divided in two parts, 36986 and 87, that added together give a palindrome (37073).

The spelling of 3698687 in words is "three million, six hundred ninety-eight thousand, six hundred eighty-seven".