623473261 has 2 divisors, whose sum is σ = 623473262. Its totient is φ = 623473260.

The previous prime is 623473247. The next prime is 623473307. The reversal of 623473261 is 162374326.

623473261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510986025 + 112487236 = 22605^2 + 10606^2 .

It is a cyclic number.

It is not a de Polignac number, because 623473261 - 2¹⁹ = 622948973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623473661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311736630 + 311736631.

It is an arithmetic number, because the mean of its divisors is an integer number (311736631).

Almost surely, 2^623473261 is an apocalyptic number.

It is an amenable number.

623473261 is a deficient number, since it is larger than the sum of its proper divisors (1).

623473261 is an equidigital number, since it uses as much as digits as its factorization.

623473261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 623473261 is about 24969.4465497335. The cubic root of 623473261 is about 854.2912225019.

The spelling of 623473261 in words is "six hundred twenty-three million, four hundred seventy-three thousand, two hundred sixty-one".