605157691 has 2 divisors, whose sum is σ = 605157692. Its totient is φ = 605157690.

The previous prime is 605157673. The next prime is 605157719. The reversal of 605157691 is 196751506.

605157691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 605157691 - 2⁵ = 605157659 is a prime.

It is not a weakly prime, because it can be changed into another prime (605158691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302578845 + 302578846.

It is an arithmetic number, because the mean of its divisors is an integer number (302578846).

Almost surely, 2^605157691 is an apocalyptic number.

605157691 is a deficient number, since it is larger than the sum of its proper divisors (1).

605157691 is an equidigital number, since it uses as much as digits as its factorization.

605157691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 605157691 is about 24599.9530690609. The cubic root of 605157691 is about 845.8425316145.

The spelling of 605157691 in words is "six hundred five million, one hundred fifty-seven thousand, six hundred ninety-one".