3595644 has 72 divisors (see below), whose sum is σ = 10145520. Its totient is φ = 1100736.

The previous prime is 3595639. The next prime is 3595649. The reversal of 3595644 is 4465953.

3595644 = 132² + 133² + ... + 235².

It is a happy number.

3595644 is a `hidden beast` number, since 3 + 5 + 9 + 5 + 644 = 666.

It is an interprime number because it is at equal distance from previous prime (3595639) and next prime (3595649).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3595599 and 3595608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3595649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18154 + ... + 18350.

It is an arithmetic number, because the mean of its divisors is an integer number (140910).

Almost surely, 2^3595644 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 3595644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5072760).

3595644 is an abundant number, since it is smaller than the sum of its proper divisors (6549876).

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

3595644 is a wasteful number, since it uses less digits than its factorization.

3595644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 215 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3595644 is about 1896.2183418583. The cubic root of 3595644 is about 153.2000459021.

The spelling of 3595644 in words is "three million, five hundred ninety-five thousand, six hundred forty-four".