3645500 has 48 divisors (see below), whose sum is σ = 8334144. Its totient is φ = 1390400.

The previous prime is 3645469. The next prime is 3645527. The reversal of 3645500 is 55463.

3645500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11342 + ... + 11658.

It is an arithmetic number, because the mean of its divisors is an integer number (173628).

Almost surely, 2^3645500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3645500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4167072).

3645500 is an abundant number, since it is smaller than the sum of its proper divisors (4688644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645500 is a wasteful number, since it uses less digits than its factorization.

3645500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3645500 is about 1909.3192504136. The cubic root of 3645500 is about 153.9048718172.

It can be divided in two parts, 3645 and 500, that multiplied together give a square (1822500 = 1350²).

The spelling of 3645500 in words is "three million, six hundred forty-five thousand, five hundred".