605781664 has 24 divisors (see below), whose sum is σ = 1231106688. Its totient is φ = 293119680.

The previous prime is 605781647. The next prime is 605781691. The reversal of 605781664 is 466187506.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 605781664.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304342 + ... + 306325.

It is an arithmetic number, because the mean of its divisors is an integer number (51296112).

Almost surely, 2^605781664 is an apocalyptic number.

It is an amenable number.

605781664 is an abundant number, since it is smaller than the sum of its proper divisors (625325024).

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

605781664 is a wasteful number, since it uses less digits than its factorization.

605781664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610708 (or 610700 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 605781664 is about 24612.6322038095. The cubic root of 605781664 is about 846.1331454584.

The spelling of 605781664 in words is "six hundred five million, seven hundred eighty-one thousand, six hundred sixty-four".