8720023619 has 2 divisors, whose sum is σ = 8720023620. Its totient is φ = 8720023618.

The previous prime is 8720023589. The next prime is 8720023661. The reversal of 8720023619 is 9163200278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8720023619 - 2²⁰ = 8718975043 is a prime.

It is a super-2 number, since 2×8720023619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8720023679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360011809 + 4360011810.

It is an arithmetic number, because the mean of its divisors is an integer number (4360011810).

Almost surely, 2^8720023619 is an apocalyptic number.

8720023619 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720023619 is an equidigital number, since it uses as much as digits as its factorization.

8720023619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 8720023619 is about 93381.0667051946. The cubic root of 8720023619 is about 2058.2867914988.

The spelling of 8720023619 in words is "eight billion, seven hundred twenty million, twenty-three thousand, six hundred nineteen".