91606141 has 4 divisors (see below), whose sum is σ = 99933984. Its totient is φ = 83278300.

The previous prime is 91606139. The next prime is 91606169. The reversal of 91606141 is 14160619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14160619 = 11 ⋅1287329.

It is a cyclic number.

It is not a de Polignac number, because 91606141 - 2¹ = 91606139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91606111) 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 3 ways as a sum of consecutive naturals, for example, 4163905 + ... + 4163926.

It is an arithmetic number, because the mean of its divisors is an integer number (24983496).

Almost surely, 2^91606141 is an apocalyptic number.

It is an amenable number.

91606141 is a deficient number, since it is larger than the sum of its proper divisors (8327843).

91606141 is a wasteful number, since it uses less digits than its factorization.

91606141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8327842.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 91606141 is about 9571.1097057760. The cubic root of 91606141 is about 450.7906117948.

The spelling of 91606141 in words is "ninety-one million, six hundred six thousand, one hundred forty-one".