3698709 has 8 divisors (see below), whose sum is σ = 5636160. Its totient is φ = 2113536.

The previous prime is 3698693. The next prime is 3698713. The reversal of 3698709 is 9078963.

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 3698709 - 2⁴ = 3698693 is a prime.

It is an Ulam number.

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

3698709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698719) 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, 88044 + ... + 88085.

It is an arithmetic number, because the mean of its divisors is an integer number (704520).

Almost surely, 2^3698709 is an apocalyptic number.

It is an amenable number.

3698709 is a deficient number, since it is larger than the sum of its proper divisors (1937451).

3698709 is a wasteful number, since it uses less digits than its factorization.

3698709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176139.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3698709 is about 1923.2027974189. The cubic root of 3698709 is about 154.6500464164.

The spelling of 3698709 in words is "three million, six hundred ninety-eight thousand, seven hundred nine".