8997836677 has 2 divisors, whose sum is σ = 8997836678. Its totient is φ = 8997836676.

The previous prime is 8997836663. The next prime is 8997836689. The reversal of 8997836677 is 7766387998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7498520836 + 1499315841 = 86594^2 + 38721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8997836677 is a prime.

It is a super-2 number, since 2×8997836677² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8997836777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498918338 + 4498918339.

It is an arithmetic number, because the mean of its divisors is an integer number (4498918339).

Almost surely, 2^8997836677 is an apocalyptic number.

It is an amenable number.

8997836677 is a deficient number, since it is larger than the sum of its proper divisors (1).

8997836677 is an equidigital number, since it uses as much as digits as its factorization.

8997836677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192036096, while the sum is 70.

The square root of 8997836677 is about 94856.9274064894. The cubic root of 8997836677 is about 2079.9171469864.

The spelling of 8997836677 in words is "eight billion, nine hundred ninety-seven million, eight hundred thirty-six thousand, six hundred seventy-seven".