3621285 has 12 divisors (see below), whose sum is σ = 6276972. Its totient is φ = 1931328.

The previous prime is 3621271. The next prime is 3621287. The reversal of 3621285 is 5821263.

3621285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1766241 + 1855044 = 1329^2 + 1362^2 .

It is not a de Polignac number, because 3621285 - 2⁴ = 3621269 is a prime.

It is a super-2 number, since 2×3621285² = 26227410102450, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621287) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40192 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (523081).

Almost surely, 2^3621285 is an apocalyptic number.

It is an amenable number.

3621285 is a deficient number, since it is larger than the sum of its proper divisors (2655687).

3621285 is a wasteful number, since it uses less digits than its factorization.

3621285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80484 (or 80481 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3621285 is about 1902.9674195845. The cubic root of 3621285 is about 153.5633467637.

It can be divided in two parts, 36 and 21285, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 3621285 in words is "three million, six hundred twenty-one thousand, two hundred eighty-five".