8742496691 has 2 divisors, whose sum is σ = 8742496692. Its totient is φ = 8742496690.

The previous prime is 8742496613. The next prime is 8742496723. The reversal of 8742496691 is 1966942478.

8742496691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8742496691 is a prime.

It is not a weakly prime, because it can be changed into another prime (8742496291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4371248345 + 4371248346.

It is an arithmetic number, because the mean of its divisors is an integer number (4371248346).

Almost surely, 2^8742496691 is an apocalyptic number.

8742496691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8742496691 is an equidigital number, since it uses as much as digits as its factorization.

8742496691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 56.

The square root of 8742496691 is about 93501.3191939023. The cubic root of 8742496691 is about 2060.0534666583.

The spelling of 8742496691 in words is "eight billion, seven hundred forty-two million, four hundred ninety-six thousand, six hundred ninety-one".