3645601 has 4 divisors (see below), whose sum is σ = 3655600. Its totient is φ = 3635604.

The previous prime is 3645589. The next prime is 3645611. The reversal of 3645601 is 1065463.

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 a de Polignac number, because none of the positive numbers 2^k-3645601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4431 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (913900).

Almost surely, 2^3645601 is an apocalyptic number.

It is an amenable number.

3645601 is a deficient number, since it is larger than the sum of its proper divisors (9999).

3645601 is an equidigital number, since it uses as much as digits as its factorization.

3645601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9998.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3645601 is about 1909.3456994479. The cubic root of 3645601 is about 153.9062931356.

The spelling of 3645601 in words is "three million, six hundred forty-five thousand, six hundred one".