91740666 has 16 divisors (see below), whose sum is σ = 185544000. Its totient is φ = 30236448.

The previous prime is 91740643. The next prime is 91740667. The reversal of 91740666 is 66604719.

It is not an unprimeable number, because it can be changed into a prime (91740667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85366 + ... + 86433.

It is an arithmetic number, because the mean of its divisors is an integer number (11596500).

Almost surely, 2^91740666 is an apocalyptic number.

91740666 is an abundant number, since it is smaller than the sum of its proper divisors (93803334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91740666 is a wasteful number, since it uses less digits than its factorization.

91740666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171893.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 91740666 is about 9578.1347871076. The cubic root of 91740666 is about 451.0111681379.

The spelling of 91740666 in words is "ninety-one million, seven hundred forty thousand, six hundred sixty-six".