3556369 has 2 divisors, whose sum is σ = 3556370. Its totient is φ = 3556368.

The previous prime is 3556367. The next prime is 3556379. The reversal of 3556369 is 9636553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3294225 + 262144 = 1815^2 + 512^2 .

It is a cyclic number.

It is not a de Polignac number, because 3556369 - 2¹ = 3556367 is a prime.

It is a super-2 number, since 2×3556369² = 25295520928322, which contains 22 as substring.

Together with 3556367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3556367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1778184 + 1778185.

It is an arithmetic number, because the mean of its divisors is an integer number (1778185).

Almost surely, 2^3556369 is an apocalyptic number.

It is an amenable number.

3556369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3556369 is an equidigital number, since it uses as much as digits as its factorization.

3556369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 37.

The square root of 3556369 is about 1885.8337678597. The cubic root of 3556369 is about 152.6402043043.

It can be divided in two parts, 355 and 6369, that added together give a square (6724 = 82²).

The spelling of 3556369 in words is "three million, five hundred fifty-six thousand, three hundred sixty-nine".