3644375 has 40 divisors (see below), whose sum is σ = 5623200. Its totient is φ = 2352000.

The previous prime is 3644357. The next prime is 3644411. The reversal of 3644375 is 5734463.

It is not a de Polignac number, because 3644375 - 2¹⁰ = 3643351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 214367 + ... + 214383.

It is an arithmetic number, because the mean of its divisors is an integer number (140580).

Almost surely, 2^3644375 is an apocalyptic number.

3644375 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3644375 is a deficient number, since it is larger than the sum of its proper divisors (1978825).

3644375 is an frugal number, since it uses more digits than its factorization.

3644375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 29 counting only the distinct ones).

The product of its digits is 30240, while the sum is 32.

The square root of 3644375 is about 1909.0246200613. The cubic root of 3644375 is about 153.8890385255.

The spelling of 3644375 in words is "three million, six hundred forty-four thousand, three hundred seventy-five".