91363641 has 8 divisors (see below), whose sum is σ = 122355744. Its totient is φ = 60640320.

The previous prime is 91363637. The next prime is 91363651. The reversal of 91363641 is 14636319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91363641 - 2² = 91363637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91363631) 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 7 ways as a sum of consecutive naturals, for example, 66400 + ... + 67761.

It is an arithmetic number, because the mean of its divisors is an integer number (15294468).

Almost surely, 2^91363641 is an apocalyptic number.

It is an amenable number.

91363641 is a deficient number, since it is larger than the sum of its proper divisors (30992103).

91363641 is a wasteful number, since it uses less digits than its factorization.

91363641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134391.

The product of its digits is 11664, while the sum is 33.

The square root of 91363641 is about 9558.4329782658. The cubic root of 91363641 is about 450.3924822755.

The spelling of 91363641 in words is "ninety-one million, three hundred sixty-three thousand, six hundred forty-one".