3645023 has 4 divisors (see below), whose sum is σ = 3733968. Its totient is φ = 3556080.

The previous prime is 3645013. The next prime is 3645049. The reversal of 3645023 is 3205463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3205463 = 103 ⋅31121.

It is a cyclic number.

It is not a de Polignac number, because 3645023 - 2⁴ = 3645007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3645023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645013) 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, 44411 + ... + 44492.

It is an arithmetic number, because the mean of its divisors is an integer number (933492).

Almost surely, 2^3645023 is an apocalyptic number.

3645023 is a deficient number, since it is larger than the sum of its proper divisors (88945).

3645023 is an equidigital number, since it uses as much as digits as its factorization.

3645023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88944.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 3645023 is about 1909.1943326964. The cubic root of 3645023 is about 153.8981588994.

The spelling of 3645023 in words is "three million, six hundred forty-five thousand, twenty-three".