605438906 has 8 divisors (see below), whose sum is σ = 908985024. Its totient is φ = 302443900.

The previous prime is 605438903. The next prime is 605438917. The reversal of 605438906 is 609834506.

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

It is not an unprimeable number, because it can be changed into a prime (605438903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135020 + ... + 139431.

It is an arithmetic number, because the mean of its divisors is an integer number (113623128).

Almost surely, 2^605438906 is an apocalyptic number.

605438906 is a deficient number, since it is larger than the sum of its proper divisors (303546118).

605438906 is a wasteful number, since it uses less digits than its factorization.

605438906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275556.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 605438906 is about 24605.6681681274. The cubic root of 605438906 is about 845.9735315041.

The spelling of 605438906 in words is "six hundred five million, four hundred thirty-eight thousand, nine hundred six".