3689731 has 8 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 3443328.

The previous prime is 3689723. The next prime is 3689753. The reversal of 3689731 is 1379863.

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

It is a cyclic number.

It is not a de Polignac number, because 3689731 - 2³ = 3689723 is a prime.

It is a super-2 number, since 2×3689731² = 27228229704722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3689711) 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, 1305 + ... + 3013.

It is an arithmetic number, because the mean of its divisors is an integer number (492480).

Almost surely, 2^3689731 is an apocalyptic number.

3689731 is a deficient number, since it is larger than the sum of its proper divisors (250109).

3689731 is a wasteful number, since it uses less digits than its factorization.

3689731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853.

The product of its digits is 27216, while the sum is 37.

The square root of 3689731 is about 1920.8672520505. The cubic root of 3689731 is about 154.5248159605.

The spelling of 3689731 in words is "three million, six hundred eighty-nine thousand, seven hundred thirty-one".