3645379 has 4 divisors (see below), whose sum is σ = 3649360. Its totient is φ = 3641400.

The previous prime is 3645377. The next prime is 3645391. The reversal of 3645379 is 9735463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9735463 = 23 ⋅423281.

It is a cyclic number.

It is not a de Polignac number, because 3645379 - 2¹ = 3645377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645371) 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, 154 + ... + 2704.

It is an arithmetic number, because the mean of its divisors is an integer number (912340).

Almost surely, 2^3645379 is an apocalyptic number.

3645379 is a deficient number, since it is larger than the sum of its proper divisors (3981).

3645379 is a wasteful number, since it uses less digits than its factorization.

3645379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980.

The product of its digits is 68040, while the sum is 37.

The square root of 3645379 is about 1909.2875634644. The cubic root of 3645379 is about 153.9031690151.

The spelling of 3645379 in words is "three million, six hundred forty-five thousand, three hundred seventy-nine".