91300641 has 4 divisors (see below), whose sum is σ = 121734192. Its totient is φ = 60867092.

The previous prime is 91300637. The next prime is 91300669. The reversal of 91300641 is 14600319.

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: 14600319 = 3 ⋅4866773.

It is a cyclic number.

It is not a de Polignac number, because 91300641 - 2² = 91300637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91300631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15216771 + ... + 15216776.

It is an arithmetic number, because the mean of its divisors is an integer number (30433548).

Almost surely, 2^91300641 is an apocalyptic number.

It is an amenable number.

91300641 is a deficient number, since it is larger than the sum of its proper divisors (30433551).

91300641 is a wasteful number, since it uses less digits than its factorization.

91300641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30433550.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 91300641 is about 9555.1368906992. The cubic root of 91300641 is about 450.2889354287.

The spelling of 91300641 in words is "ninety-one million, three hundred thousand, six hundred forty-one".