91006917 has 8 divisors (see below), whose sum is σ = 125256960. Its totient is φ = 58714080.

The previous prime is 91006897. The next prime is 91006957. The reversal of 91006917 is 71960019.

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

It is not a de Polignac number, because 91006917 - 2²³ = 82618309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91006957) 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, 489192 + ... + 489377.

It is an arithmetic number, because the mean of its divisors is an integer number (15657120).

Almost surely, 2^91006917 is an apocalyptic number.

It is an amenable number.

91006917 is a deficient number, since it is larger than the sum of its proper divisors (34250043).

91006917 is a wasteful number, since it uses less digits than its factorization.

91006917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978603.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 91006917 is about 9539.7545565911. The cubic root of 91006917 is about 449.8055406714.

The spelling of 91006917 in words is "ninety-one million, six thousand, nine hundred seventeen".