605661611 has 8 divisors (see below), whose sum is σ = 609111360. Its totient is φ = 602219968.

The previous prime is 605661587. The next prime is 605661629. The reversal of 605661611 is 116166506.

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

It is a cyclic number.

It is not a de Polignac number, because 605661611 - 2²⁶ = 538552747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605661671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203345 + ... + 206301.

It is an arithmetic number, because the mean of its divisors is an integer number (76138920).

Almost surely, 2^605661611 is an apocalyptic number.

605661611 is a deficient number, since it is larger than the sum of its proper divisors (3449749).

605661611 is a wasteful number, since it uses less digits than its factorization.

605661611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 605661611 is about 24610.1932336989. The cubic root of 605661611 is about 846.0772465872.

The spelling of 605661611 in words is "six hundred five million, six hundred sixty-one thousand, six hundred eleven".