91607965 has 8 divisors (see below), whose sum is σ = 114709248. Its totient is φ = 70099920.

The previous prime is 91607959. The next prime is 91607969. The reversal of 91607965 is 56970619.

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

It is not a de Polignac number, because 91607965 - 2⁷ = 91607837 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 (91607969) 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 7 ways as a sum of consecutive naturals, for example, 398181 + ... + 398410.

It is an arithmetic number, because the mean of its divisors is an integer number (14338656).

Almost surely, 2^91607965 is an apocalyptic number.

It is an amenable number.

91607965 is a deficient number, since it is larger than the sum of its proper divisors (23101283).

91607965 is a wasteful number, since it uses less digits than its factorization.

91607965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796619.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 91607965 is about 9571.2049920582. The cubic root of 91607965 is about 450.7936037217.

The spelling of 91607965 in words is "ninety-one million, six hundred seven thousand, nine hundred sixty-five".