609638 has 16 divisors (see below), whose sum is σ = 989280. Its totient is φ = 280896.

The previous prime is 609619. The next prime is 609641. The reversal of 609638 is 836906.

It is a happy number.

609638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106 + ... + 1562.

It is an arithmetic number, because the mean of its divisors is an integer number (61830).

2⁶⁰⁹⁶³⁸ is an apocalyptic number.

609638 is a deficient number, since it is larger than the sum of its proper divisors (379642).

609638 is a wasteful number, since it uses less digits than its factorization.

609638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 609638 is about 780.7931864457. The cubic root of 609638 is about 84.7924810884.

The spelling of 609638 in words is "six hundred nine thousand, six hundred thirty-eight".