667141091 has 16 divisors (see below), whose sum is σ = 711516960. Its totient is φ = 623750400.

The previous prime is 667141073. The next prime is 667141121. The reversal of 667141091 is 190141766.

It is a cyclic number.

It is not a de Polignac number, because 667141091 - 2²⁶ = 600032227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667141061) 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 15 ways as a sum of consecutive naturals, for example, 512141 + ... + 513441.

It is an arithmetic number, because the mean of its divisors is an integer number (44469810).

Almost surely, 2^667141091 is an apocalyptic number.

667141091 is a deficient number, since it is larger than the sum of its proper divisors (44375869).

667141091 is a wasteful number, since it uses less digits than its factorization.

667141091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 667141091 is about 25829.0745285231. The cubic root of 667141091 is about 873.7876395145.

The spelling of 667141091 in words is "six hundred sixty-seven million, one hundred forty-one thousand, ninety-one".