3598561 has 4 divisors (see below), whose sum is σ = 3610372. Its totient is φ = 3586752.

The previous prime is 3598549. The next prime is 3598589. The reversal of 3598561 is 1658953.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 2822400 = 881^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 3598561 - 2¹⁹ = 3074273 is a prime.

It is a Duffinian number.

3598561 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3598561.

It is not an unprimeable number, because it can be changed into a prime (3598501) 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, 5436 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (902593).

Almost surely, 2^3598561 is an apocalyptic number.

It is an amenable number.

3598561 is a deficient number, since it is larger than the sum of its proper divisors (11811).

3598561 is a wasteful number, since it uses less digits than its factorization.

3598561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810.

The product of its digits is 32400, while the sum is 37.

The square root of 3598561 is about 1896.9873484027. The cubic root of 3598561 is about 153.2414630300.

It can be divided in two parts, 35985 and 61, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 3598561 in words is "three million, five hundred ninety-eight thousand, five hundred sixty-one".