3699685 has 16 divisors (see below), whose sum is σ = 4888512. Its totient is φ = 2665600.

The previous prime is 3699679. The next prime is 3699691. The reversal of 3699685 is 5869963.

3699685 = T₁₂₁₄ + T₁₂₁₅ + ... + T₁₂₁₈.

It is an interprime number because it is at equal distance from previous prime (3699679) and next prime (3699691).

It is a de Polignac number, because none of the positive numbers 2^k-3699685 is a prime.

It is a Duffinian number.

3699685 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7290 + ... + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (305532).

Almost surely, 2^3699685 is an apocalyptic number.

It is an amenable number.

3699685 is a deficient number, since it is larger than the sum of its proper divisors (1188827).

3699685 is a wasteful number, since it uses less digits than its factorization.

3699685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its digits is 349920, while the sum is 46.

The square root of 3699685 is about 1923.4565240733. The cubic root of 3699685 is about 154.6636480246.

The spelling of 3699685 in words is "three million, six hundred ninety-nine thousand, six hundred eighty-five".