3609638 has 4 divisors (see below), whose sum is σ = 5414460. Its totient is φ = 1804818.

The previous prime is 3609637. The next prime is 3609649. The reversal of 3609638 is 8369063.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3609598 and 3609607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902408 + ... + 902411.

It is an arithmetic number, because the mean of its divisors is an integer number (1353615).

Almost surely, 2^3609638 is an apocalyptic number.

3609638 is a deficient number, since it is larger than the sum of its proper divisors (1804822).

3609638 is a wasteful number, since it uses less digits than its factorization.

3609638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804821.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3609638 is about 1899.9047344538. The cubic root of 3609638 is about 153.3985366463.

The spelling of 3609638 in words is "three million, six hundred nine thousand, six hundred thirty-eight".