3621786 has 48 divisors (see below), whose sum is σ = 8580096. Its totient is φ = 1016064.

The previous prime is 3621767. The next prime is 3621797. The reversal of 3621786 is 6871263.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28455 + ... + 28581.

It is an arithmetic number, because the mean of its divisors is an integer number (178752).

Almost surely, 2^3621786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3621786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4290048).

3621786 is an abundant number, since it is smaller than the sum of its proper divisors (4958310).

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

3621786 is a wasteful number, since it uses less digits than its factorization.

3621786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 236 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 3621786 is about 1903.0990515472. The cubic root of 3621786 is about 153.5704281992.

The spelling of 3621786 in words is "three million, six hundred twenty-one thousand, seven hundred eighty-six".