3621996 has 60 divisors (see below), whose sum is σ = 10828048. Its totient is φ = 1034208.

The previous prime is 3621983. The next prime is 3622001. The reversal of 3621996 is 6991263.

3621996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 3621996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1470 + ... + 3066.

Almost surely, 2^3621996 is an apocalyptic number.

3621996 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 3621996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5414024).

3621996 is an abundant number, since it is smaller than the sum of its proper divisors (7206052).

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

3621996 is a wasteful number, since it uses less digits than its factorization.

3621996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1609 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 3621996 is about 1903.1542239136. The cubic root of 3621996 is about 153.5733962714.

It can be divided in two parts, 36219 and 96, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 3621996 in words is "three million, six hundred twenty-one thousand, nine hundred ninety-six".