3688993 has 16 divisors (see below), whose sum is σ = 4801536. Its totient is φ = 2748240.

The previous prime is 3688991. The next prime is 3689009. The reversal of 3688993 is 3998863.

It is not a de Polignac number, because 3688993 - 2¹ = 3688991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730 + ... + 2812.

It is an arithmetic number, because the mean of its divisors is an integer number (300096).

Almost surely, 2^3688993 is an apocalyptic number.

It is an amenable number.

3688993 is a deficient number, since it is larger than the sum of its proper divisors (1112543).

3688993 is a wasteful number, since it uses less digits than its factorization.

3688993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124.

The product of its digits is 279936, while the sum is 46.

The square root of 3688993 is about 1920.6751417145. The cubic root of 3688993 is about 154.5145128682.

The spelling of 3688993 in words is "three million, six hundred eighty-eight thousand, nine hundred ninety-three".