3645001 has 4 divisors (see below), whose sum is σ = 3699472. Its totient is φ = 3590532.

The previous prime is 3644999. The next prime is 3645007. The reversal of 3645001 is 1005463.

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 3645001 - 2¹ = 3644999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3645001.

It is not an unprimeable number, because it can be changed into a prime (3645007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27135 + ... + 27268.

It is an arithmetic number, because the mean of its divisors is an integer number (924868).

Almost surely, 2^3645001 is an apocalyptic number.

It is an amenable number.

3645001 is a deficient number, since it is larger than the sum of its proper divisors (54471).

3645001 is an equidigital number, since it uses as much as digits as its factorization.

3645001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54470.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3645001 is about 1909.1885710951. The cubic root of 3645001 is about 153.8978492748.

The spelling of 3645001 in words is "three million, six hundred forty-five thousand, one".