623711089 has 2 divisors, whose sum is σ = 623711090. Its totient is φ = 623711088.

The previous prime is 623711059. The next prime is 623711093. The reversal of 623711089 is 980117326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623351089 + 360000 = 24967^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 623711089 - 2¹¹ = 623709041 is a prime.

It is not a weakly prime, because it can be changed into another prime (623711029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311855544 + 311855545.

It is an arithmetic number, because the mean of its divisors is an integer number (311855545).

Almost surely, 2^623711089 is an apocalyptic number.

It is an amenable number.

623711089 is a deficient number, since it is larger than the sum of its proper divisors (1).

623711089 is an equidigital number, since it uses as much as digits as its factorization.

623711089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 623711089 is about 24974.2084759457. The cubic root of 623711089 is about 854.3998337058.

The spelling of 623711089 in words is "six hundred twenty-three million, seven hundred eleven thousand, eighty-nine".