609658885 has 8 divisors (see below), whose sum is σ = 798098976. Its totient is φ = 443388240.

The previous prime is 609658883. The next prime is 609658891. The reversal of 609658885 is 588856906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609658885 - 2¹ = 609658883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 11084707 = 609658885 / (6 + 0 + 9 + 6 + 5 + 8 + 8 + 8 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609658883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5542299 + ... + 5542408.

It is an arithmetic number, because the mean of its divisors is an integer number (99762372).

Almost surely, 2^609658885 is an apocalyptic number.

It is an amenable number.

609658885 is a deficient number, since it is larger than the sum of its proper divisors (188440091).

609658885 is a wasteful number, since it uses less digits than its factorization.

609658885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11084723.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The square root of 609658885 is about 24691.2714334438. The cubic root of 609658885 is about 847.9344935196.

The spelling of 609658885 in words is "six hundred nine million, six hundred fifty-eight thousand, eight hundred eighty-five".