601191091 has 8 divisors (see below), whose sum is σ = 620923904. Its totient is φ = 581479560.

The previous prime is 601191037. The next prime is 601191167. The reversal of 601191091 is 190191106.

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 601191091 - 2⁷ = 601190963 is a prime.

It is a super-2 number, since 2×601191091² = 722861455795540562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601191001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68626 + ... + 76888.

It is an arithmetic number, because the mean of its divisors is an integer number (77615488).

Almost surely, 2^601191091 is an apocalyptic number.

601191091 is a deficient number, since it is larger than the sum of its proper divisors (19732813).

601191091 is a wasteful number, since it uses less digits than its factorization.

601191091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 601191091 is about 24519.1984167509. The cubic root of 601191091 is about 843.9904103153.

The spelling of 601191091 in words is "six hundred one million, one hundred ninety-one thousand, ninety-one".