609638385 has 16 divisors (see below), whose sum is σ = 984540096. Its totient is φ = 322100928.

The previous prime is 609638369. The next prime is 609638431. The reversal of 609638385 is 583836906.

It is not a de Polignac number, because 609638385 - 2⁴ = 609638369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188314 + ... + 191523.

It is an arithmetic number, because the mean of its divisors is an integer number (61533756).

Almost surely, 2^609638385 is an apocalyptic number.

It is an amenable number.

609638385 is a deficient number, since it is larger than the sum of its proper divisors (374901711).

609638385 is a wasteful number, since it uses less digits than its factorization.

609638385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379952.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 609638385 is about 24690.8563034983. The cubic root of 609638385 is about 847.9249893786.

The spelling of 609638385 in words is "six hundred nine million, six hundred thirty-eight thousand, three hundred eighty-five".