3621243 has 16 divisors (see below), whose sum is σ = 5040000. Its totient is φ = 2310720.

The previous prime is 3621239. The next prime is 3621251. The reversal of 3621243 is 3421263.

It is a happy number.

It is not a de Polignac number, because 3621243 - 2² = 3621239 is a prime.

It is a super-2 number, since 2×3621243² = 26226801730098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3621223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7008 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (315000).

Almost surely, 2^3621243 is an apocalyptic number.

3621243 is a deficient number, since it is larger than the sum of its proper divisors (1418757).

3621243 is a wasteful number, since it uses less digits than its factorization.

3621243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its digits is 864, while the sum is 21.

The square root of 3621243 is about 1902.9563841560. The cubic root of 3621243 is about 153.5627530807.

The spelling of 3621243 in words is "three million, six hundred twenty-one thousand, two hundred forty-three".