623223829 has 2 divisors, whose sum is σ = 623223830. Its totient is φ = 623223828.

The previous prime is 623223803. The next prime is 623223863. The reversal of 623223829 is 928322326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554367025 + 68856804 = 23545^2 + 8298^2 .

It is a cyclic number.

It is not a de Polignac number, because 623223829 - 2²⁵ = 589669397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623223869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311611914 + 311611915.

It is an arithmetic number, because the mean of its divisors is an integer number (311611915).

Almost surely, 2^623223829 is an apocalyptic number.

It is an amenable number.

623223829 is a deficient number, since it is larger than the sum of its proper divisors (1).

623223829 is an equidigital number, since it uses as much as digits as its factorization.

623223829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 623223829 is about 24964.4513058068. The cubic root of 623223829 is about 854.1772823089.

The spelling of 623223829 in words is "six hundred twenty-three million, two hundred twenty-three thousand, eight hundred twenty-nine".