91074601 has 4 divisors (see below), whose sum is σ = 91654852. Its totient is φ = 90494352.

The previous prime is 91074589. The next prime is 91074637. The reversal of 91074601 is 10647019.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28901376 + 62173225 = 5376^2 + 7885^2 .

It is a cyclic number.

It is not a de Polignac number, because 91074601 - 2⁵ = 91074569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91074601.

It is not an unprimeable number, because it can be changed into a prime (91074671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289890 + ... + 290203.

It is an arithmetic number, because the mean of its divisors is an integer number (22913713).

Almost surely, 2^91074601 is an apocalyptic number.

It is an amenable number.

91074601 is a deficient number, since it is larger than the sum of its proper divisors (580251).

91074601 is a wasteful number, since it uses less digits than its factorization.

91074601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580250.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 91074601 is about 9543.3013679753. The cubic root of 91074601 is about 449.9170233838.

The spelling of 91074601 in words is "ninety-one million, seventy-four thousand, six hundred one".