3640001 has 4 divisors (see below), whose sum is σ = 3831600. Its totient is φ = 3448404.

The previous prime is 3639997. The next prime is 3640019. The reversal of 3640001 is 1000463.

3640001 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 3640001 - 2² = 3639997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640031) 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, 95771 + ... + 95808.

It is an arithmetic number, because the mean of its divisors is an integer number (957900).

Almost surely, 2^3640001 is an apocalyptic number.

It is an amenable number.

3640001 is a deficient number, since it is larger than the sum of its proper divisors (191599).

3640001 is a wasteful number, since it uses less digits than its factorization.

3640001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191598.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3640001 is about 1907.8786649051. The cubic root of 3640001 is about 153.8274477064.

Adding to 3640001 its reverse (1000463), we get a palindrome (4640464).

The spelling of 3640001 in words is "three million, six hundred forty thousand, one".