623074861 has 2 divisors, whose sum is σ = 623074862. Its totient is φ = 623074860.

The previous prime is 623074843. The next prime is 623074873. The reversal of 623074861 is 168470326.

623074861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317908900 + 305165961 = 17830^2 + 17469^2 .

It is a cyclic number.

It is not a de Polignac number, because 623074861 - 2²⁷ = 488857133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623074861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623374861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311537430 + 311537431.

It is an arithmetic number, because the mean of its divisors is an integer number (311537431).

Almost surely, 2^623074861 is an apocalyptic number.

It is an amenable number.

623074861 is a deficient number, since it is larger than the sum of its proper divisors (1).

623074861 is an equidigital number, since it uses as much as digits as its factorization.

623074861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 623074861 is about 24961.4675249674. The cubic root of 623074861 is about 854.1092194316.

The spelling of 623074861 in words is "six hundred twenty-three million, seventy-four thousand, eight hundred sixty-one".