3561844 has 36 divisors (see below), whose sum is σ = 7378560. Its totient is φ = 1491360.

The previous prime is 3561841. The next prime is 3561847. The reversal of 3561844 is 4481653.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3561841) and next prime (3561847).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7197 + ... + 7675.

It is an arithmetic number, because the mean of its divisors is an integer number (204960).

Almost surely, 2^3561844 is an apocalyptic number.

It is an amenable number.

3561844 is an abundant number, since it is smaller than the sum of its proper divisors (3816716).

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

3561844 is a wasteful number, since it uses less digits than its factorization.

3561844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 505 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 3561844 is about 1887.2848221718. The cubic root of 3561844 is about 152.7184935773.

The spelling of 3561844 in words is "three million, five hundred sixty-one thousand, eight hundred forty-four".