3581316 has 36 divisors (see below), whose sum is σ = 9228492. Its totient is φ = 1170624.

The previous prime is 3581293. The next prime is 3581321. The reversal of 3581316 is 6131853.

It can be written as a sum of positive squares in 2 ways, for example, as 2414916 + 1166400 = 1554^2 + 1080^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3581316.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 970 + ... + 2846.

It is an arithmetic number, because the mean of its divisors is an integer number (256347).

Almost surely, 2^3581316 is an apocalyptic number.

3581316 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3581316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4614246).

3581316 is an abundant number, since it is smaller than the sum of its proper divisors (5647176).

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

3581316 is a wasteful number, since it uses less digits than its factorization.

3581316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1935 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3581316 is about 1892.4365246951. The cubic root of 3581316 is about 152.9962833904.

The spelling of 3581316 in words is "three million, five hundred eighty-one thousand, three hundred sixteen".