3633689 has 2 divisors, whose sum is σ = 3633690. Its totient is φ = 3633688.

The previous prime is 3633683. The next prime is 3633697. The reversal of 3633689 is 9863363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982464 + 1651225 = 1408^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 3633689 - 2⁴ = 3633673 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3633683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1816844 + 1816845.

It is an arithmetic number, because the mean of its divisors is an integer number (1816845).

Almost surely, 2^3633689 is an apocalyptic number.

It is an amenable number.

3633689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3633689 is an equidigital number, since it uses as much as digits as its factorization.

3633689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 3633689 is about 1906.2237539177. The cubic root of 3633689 is about 153.7384806405.

The spelling of 3633689 in words is "three million, six hundred thirty-three thousand, six hundred eighty-nine".