623816147 has 2 divisors, whose sum is σ = 623816148. Its totient is φ = 623816146.

The previous prime is 623816119. The next prime is 623816177. The reversal of 623816147 is 741618326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623816147 - 2⁸ = 623815891 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623816147.

It is not a weakly prime, because it can be changed into another prime (623816177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311908073 + 311908074.

It is an arithmetic number, because the mean of its divisors is an integer number (311908074).

Almost surely, 2^623816147 is an apocalyptic number.

623816147 is a deficient number, since it is larger than the sum of its proper divisors (1).

623816147 is an equidigital number, since it uses as much as digits as its factorization.

623816147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 623816147 is about 24976.3117173053. The cubic root of 623816147 is about 854.4478027628.

The spelling of 623816147 in words is "six hundred twenty-three million, eight hundred sixteen thousand, one hundred forty-seven".