623349329 has 2 divisors, whose sum is σ = 623349330. Its totient is φ = 623349328.

The previous prime is 623349317. The next prime is 623349341. The reversal of 623349329 is 923943326.

It is a balanced prime because it is at equal distance from previous prime (623349317) and next prime (623349341).

It can be written as a sum of positive squares in only one way, i.e., 608756929 + 14592400 = 24673^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 623349329 - 2²⁰ = 622300753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (623349029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311674664 + 311674665.

It is an arithmetic number, because the mean of its divisors is an integer number (311674665).

Almost surely, 2^623349329 is an apocalyptic number.

It is an amenable number.

623349329 is a deficient number, since it is larger than the sum of its proper divisors (1).

623349329 is an equidigital number, since it uses as much as digits as its factorization.

623349329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

The square root of 623349329 is about 24966.9647534497. The cubic root of 623349329 is about 854.2346143348.

The spelling of 623349329 in words is "six hundred twenty-three million, three hundred forty-nine thousand, three hundred twenty-nine".