3639697 has 4 divisors (see below), whose sum is σ = 3831280. Its totient is φ = 3448116.

The previous prime is 3639689. The next prime is 3639719. The reversal of 3639697 is 7969363.

It is a happy number.

3639697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3639697 - 2³ = 3639689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3639637) 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 3 ways as a sum of consecutive naturals, for example, 95763 + ... + 95800.

It is an arithmetic number, because the mean of its divisors is an integer number (957820).

Almost surely, 2^3639697 is an apocalyptic number.

It is an amenable number.

3639697 is a deficient number, since it is larger than the sum of its proper divisors (191583).

3639697 is a wasteful number, since it uses less digits than its factorization.

3639697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191582.

The product of its digits is 183708, while the sum is 43.

The square root of 3639697 is about 1907.7989936049. The cubic root of 3639697 is about 153.8231652125.

The spelling of 3639697 in words is "three million, six hundred thirty-nine thousand, six hundred ninety-seven".