8690804991 has 96 divisors (see below), whose sum is σ = 15361332480. Its totient is φ = 4666291200.

The previous prime is 8690804981. The next prime is 8690805023. The reversal of 8690804991 is 1994080968.

8690804991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8690804991 - 2⁵ = 8690804959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8690804981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5531236 + ... + 5532806.

It is an arithmetic number, because the mean of its divisors is an integer number (160013880).

Almost surely, 2^8690804991 is an apocalyptic number.

8690804991 is a deficient number, since it is larger than the sum of its proper divisors (6670527489).

8690804991 is a wasteful number, since it uses less digits than its factorization.

8690804991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 8690804991 is about 93224.4870782350. The cubic root of 8690804991 is about 2055.9852834689.

The spelling of 8690804991 in words is "eight billion, six hundred ninety million, eight hundred four thousand, nine hundred ninety-one".