8689998623 has 2 divisors, whose sum is σ = 8689998624. Its totient is φ = 8689998622.

The previous prime is 8689998617. The next prime is 8689998649. The reversal of 8689998623 is 3268999868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8689998623 - 2⁴ = 8689998607 is a prime.

It is a super-2 number, since 2×8689998623² (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 (8689995623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4344999311 + 4344999312.

It is an arithmetic number, because the mean of its divisors is an integer number (4344999312).

Almost surely, 2^8689998623 is an apocalyptic number.

8689998623 is a deficient number, since it is larger than the sum of its proper divisors (1).

8689998623 is an equidigital number, since it uses as much as digits as its factorization.

8689998623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80621568, while the sum is 68.

The square root of 8689998623 is about 93220.1621056303. The cubic root of 8689998623 is about 2055.9216939617.

The spelling of 8689998623 in words is "eight billion, six hundred eighty-nine million, nine hundred ninety-eight thousand, six hundred twenty-three".