605345681 has 8 divisors (see below), whose sum is σ = 659179200. Its totient is φ = 553709520.

The previous prime is 605345677. The next prime is 605345683. The reversal of 605345681 is 186543506.

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 605345681 - 2² = 605345677 is a prime.

It is a super-2 number, since 2×605345681² = 732886787010707522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605345683) 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 7 ways as a sum of consecutive naturals, for example, 548765 + ... + 549866.

It is an arithmetic number, because the mean of its divisors is an integer number (82397400).

Almost surely, 2^605345681 is an apocalyptic number.

It is an amenable number.

605345681 is a deficient number, since it is larger than the sum of its proper divisors (53833519).

605345681 is a wasteful number, since it uses less digits than its factorization.

605345681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098679.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 605345681 is about 24603.7737146154. The cubic root of 605345681 is about 845.9301084987.

The spelling of 605345681 in words is "six hundred five million, three hundred forty-five thousand, six hundred eighty-one".