91587716 has 24 divisors (see below), whose sum is σ = 175331520. Its totient is φ = 41516000.

The previous prime is 91587697. The next prime is 91587737. The reversal of 91587716 is 61778519.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14441 + ... + 19791.

It is an arithmetic number, because the mean of its divisors is an integer number (7305480).

Almost surely, 2^91587716 is an apocalyptic number.

It is an amenable number.

91587716 is a deficient number, since it is larger than the sum of its proper divisors (83743804).

91587716 is a wasteful number, since it uses less digits than its factorization.

91587716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755 (or 5753 counting only the distinct ones).

The product of its digits is 105840, while the sum is 44.

The square root of 91587716 is about 9570.1471253059. The cubic root of 91587716 is about 450.7603868417.

The spelling of 91587716 in words is "ninety-one million, five hundred eighty-seven thousand, seven hundred sixteen".