605669994 has 32 divisors (see below), whose sum is σ = 1404455040. Its totient is φ = 193111776.

The previous prime is 605669993. The next prime is 605670031. The reversal of 605669994 is 499966506.

It is a happy number.

It is a super-2 number, since 2×605669994² = 733672283263920072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 605669994.

It is not an unprimeable number, because it can be changed into a prime (605669993) 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 15 ways as a sum of consecutive naturals, for example, 242587 + ... + 245070.

It is an arithmetic number, because the mean of its divisors is an integer number (43889220).

Almost surely, 2^605669994 is an apocalyptic number.

605669994 is an abundant number, since it is smaller than the sum of its proper divisors (798785046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605669994 is a wasteful number, since it uses less digits than its factorization.

605669994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487691 (or 487685 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The square root of 605669994 is about 24610.3635487166. The cubic root of 605669994 is about 846.0811501051.

The spelling of 605669994 in words is "six hundred five million, six hundred sixty-nine thousand, nine hundred ninety-four".