623078089 has 2 divisors, whose sum is σ = 623078090. Its totient is φ = 623078088.

The previous prime is 623078087. The next prime is 623078161. The reversal of 623078089 is 980870326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582015625 + 41062464 = 24125^2 + 6408^2 .

It is a cyclic number.

It is not a de Polignac number, because 623078089 - 2¹ = 623078087 is a prime.

Together with 623078087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (623078081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311539044 + 311539045.

It is an arithmetic number, because the mean of its divisors is an integer number (311539045).

Almost surely, 2^623078089 is an apocalyptic number.

It is an amenable number.

623078089 is a deficient number, since it is larger than the sum of its proper divisors (1).

623078089 is an equidigital number, since it uses as much as digits as its factorization.

623078089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 623078089 is about 24961.5321845435. The cubic root of 623078089 is about 854.1106944067.

The spelling of 623078089 in words is "six hundred twenty-three million, seventy-eight thousand, eighty-nine".