91098763 has 8 divisors (see below), whose sum is σ = 104405760. Its totient is φ = 77865000.

The previous prime is 91098731. The next prime is 91098781. The reversal of 91098763 is 36789019.

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 91098763 - 2⁵ = 91098731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91098703) 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, 15613 + ... + 20638.

It is an arithmetic number, because the mean of its divisors is an integer number (13050720).

Almost surely, 2^91098763 is an apocalyptic number.

91098763 is a deficient number, since it is larger than the sum of its proper divisors (13306997).

91098763 is a wasteful number, since it uses less digits than its factorization.

91098763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36617.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 91098763 is about 9544.5671981500. The cubic root of 91098763 is about 449.9568073770.

The spelling of 91098763 in words is "ninety-one million, ninety-eight thousand, seven hundred sixty-three".