605660091 has 8 divisors (see below), whose sum is σ = 808002384. Its totient is φ = 403545600.

The previous prime is 605660087. The next prime is 605660119. The reversal of 605660091 is 190066506.

605660091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 605660091 - 2² = 605660087 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (605660021) 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, 50646 + ... + 61451.

It is an arithmetic number, because the mean of its divisors is an integer number (101000298).

Almost surely, 2^605660091 is an apocalyptic number.

605660091 is a deficient number, since it is larger than the sum of its proper divisors (202342293).

605660091 is a wasteful number, since it uses less digits than its factorization.

605660091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113901.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 605660091 is about 24610.1623521666. The cubic root of 605660091 is about 846.0765388001.

The spelling of 605660091 in words is "six hundred five million, six hundred sixty thousand, ninety-one".