3581946 has 12 divisors (see below), whose sum is σ = 7760922. Its totient is φ = 1193976.

The previous prime is 3581927. The next prime is 3581953. The reversal of 3581946 is 6491853.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 1718721 = 1365^2 + 1311^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3581946.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99481 + ... + 99516.

Almost surely, 2^3581946 is an apocalyptic number.

3581946 is an abundant number, since it is smaller than the sum of its proper divisors (4178976).

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

3581946 is a wasteful number, since it uses less digits than its factorization.

3581946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199005 (or 199002 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3581946 is about 1892.6029694577. The cubic root of 3581946 is about 153.0052542089.

It can be divided in two parts, 358 and 1946, that added together give a square (2304 = 48²).

The spelling of 3581946 in words is "three million, five hundred eighty-one thousand, nine hundred forty-six".