605161581 has 8 divisors (see below), whose sum is σ = 807175584. Its totient is φ = 403294320.

The previous prime is 605161577. The next prime is 605161619. The reversal of 605161581 is 185161506.

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

It is not a de Polignac number, because 605161581 - 2² = 605161577 is a prime.

It is a super-2 number, since 2×605161581² = 732441078236839122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605161481) 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, 26671 + ... + 43836.

It is an arithmetic number, because the mean of its divisors is an integer number (100896948).

Almost surely, 2^605161581 is an apocalyptic number.

It is an amenable number.

605161581 is a deficient number, since it is larger than the sum of its proper divisors (202014003).

605161581 is a wasteful number, since it uses less digits than its factorization.

605161581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73371.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 605161581 is about 24600.0321341254. The cubic root of 605161581 is about 845.8443439908.

The spelling of 605161581 in words is "six hundred five million, one hundred sixty-one thousand, five hundred eighty-one".