3697993 has 16 divisors (see below), whose sum is σ = 4369680. Its totient is φ = 3096576.

The previous prime is 3697949. The next prime is 3697997. The reversal of 3697993 is 3997963.

3697993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 356409 + 3341584 = 597^2 + 1828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3697993 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3697997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6121 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (273105).

Almost surely, 2^3697993 is an apocalyptic number.

It is an amenable number.

3697993 is a deficient number, since it is larger than the sum of its proper divisors (671687).

3697993 is a wasteful number, since it uses less digits than its factorization.

3697993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its digits is 275562, while the sum is 46.

The square root of 3697993 is about 1923.0166405936. The cubic root of 3697993 is about 154.6400666659.

The spelling of 3697993 in words is "three million, six hundred ninety-seven thousand, nine hundred ninety-three".