3644237 has 2 divisors, whose sum is σ = 3644238. Its totient is φ = 3644236.

The previous prime is 3644231. The next prime is 3644279. The reversal of 3644237 is 7324463.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3455881 + 188356 = 1859^2 + 434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3644237 is a prime.

It is a d-powerful number, because it can be written as 3 + 6⁶ + 4³ + 4¹⁰ + 2¹⁷ + 3¹³ + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822118 + 1822119.

It is an arithmetic number, because the mean of its divisors is an integer number (1822119).

Almost surely, 2^3644237 is an apocalyptic number.

It is an amenable number.

3644237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644237 is an equidigital number, since it uses as much as digits as its factorization.

3644237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 29.

The square root of 3644237 is about 1908.9884756069. The cubic root of 3644237 is about 153.8870960841.

The spelling of 3644237 in words is "three million, six hundred forty-four thousand, two hundred thirty-seven".