623636413 has 2 divisors, whose sum is σ = 623636414. Its totient is φ = 623636412.

The previous prime is 623636407. The next prime is 623636417. The reversal of 623636413 is 314636326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617174649 + 6461764 = 24843^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 623636413 - 2¹⁷ = 623505341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623636417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311818206 + 311818207.

It is an arithmetic number, because the mean of its divisors is an integer number (311818207).

Almost surely, 2^623636413 is an apocalyptic number.

It is an amenable number.

623636413 is a deficient number, since it is larger than the sum of its proper divisors (1).

623636413 is an equidigital number, since it uses as much as digits as its factorization.

623636413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 34.

The square root of 623636413 is about 24972.7133687951. The cubic root of 623636413 is about 854.3657336715.

The spelling of 623636413 in words is "six hundred twenty-three million, six hundred thirty-six thousand, four hundred thirteen".