91607 has 4 divisors (see below), whose sum is σ = 92616. Its totient is φ = 90600.

The previous prime is 91591. The next prime is 91621. The reversal of 91607 is 70619.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 91607 - 2⁴ = 91591 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91807) 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, 353 + ... + 554.

It is an arithmetic number, because the mean of its divisors is an integer number (23154).

2⁹¹⁶⁰⁷ is an apocalyptic number.

91607 is a deficient number, since it is larger than the sum of its proper divisors (1009).

91607 is a wasteful number, since it uses less digits than its factorization.

91607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 91607 is about 302.6664831130. Note that the first 3 decimals coincide. The cubic root of 91607 is about 45.0792020827.

The spelling of 91607 in words is "ninety-one thousand, six hundred seven".