91016905 has 8 divisors (see below), whose sum is σ = 124823232. Its totient is φ = 62411568.

The previous prime is 91016903. The next prime is 91016923. The reversal of 91016905 is 50961019.

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

It is a cyclic number.

It is not a de Polignac number, because 91016905 - 2¹ = 91016903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91016903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300207 + ... + 1300276.

It is an arithmetic number, because the mean of its divisors is an integer number (15602904).

Almost surely, 2^91016905 is an apocalyptic number.

It is an amenable number.

91016905 is a deficient number, since it is larger than the sum of its proper divisors (33806327).

91016905 is a wasteful number, since it uses less digits than its factorization.

91016905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600495.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 91016905 is about 9540.2780357807. The cubic root of 91016905 is about 449.8219954404.

The spelling of 91016905 in words is "ninety-one million, sixteen thousand, nine hundred five".