98805691 has 4 divisors (see below), whose sum is σ = 98905792. Its totient is φ = 98705592.

The previous prime is 98805671. The next prime is 98805761. The reversal of 98805691 is 19650889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19650889 = 577 ⋅34057.

It is a cyclic number.

It is not a de Polignac number, because 98805691 - 2¹⁵ = 98772923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98805661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48555 + ... + 50548.

It is an arithmetic number, because the mean of its divisors is an integer number (24726448).

Almost surely, 2^98805691 is an apocalyptic number.

98805691 is a deficient number, since it is larger than the sum of its proper divisors (100101).

98805691 is an equidigital number, since it uses as much as digits as its factorization.

98805691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100100.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 98805691 is about 9940.1051805300. The cubic root of 98805691 is about 462.3036474522.

The spelling of 98805691 in words is "ninety-eight million, eight hundred five thousand, six hundred ninety-one".