624423601 has 2 divisors, whose sum is σ = 624423602. Its totient is φ = 624423600.

The previous prime is 624423599. The next prime is 624423637. The reversal of 624423601 is 106324426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584430625 + 39992976 = 24175^2 + 6324^2 .

It is a cyclic number.

It is not a de Polignac number, because 624423601 - 2¹ = 624423599 is a prime.

Together with 624423599, it forms a pair of twin primes.

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 624423601.

It is not a weakly prime, because it can be changed into another prime (624423641) 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, 312211800 + 312211801.

It is an arithmetic number, because the mean of its divisors is an integer number (312211801).

Almost surely, 2^624423601 is an apocalyptic number.

It is an amenable number.

624423601 is a deficient number, since it is larger than the sum of its proper divisors (1).

624423601 is an equidigital number, since it uses as much as digits as its factorization.

624423601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 624423601 is about 24988.4693608872. The cubic root of 624423601 is about 854.7250582515.

The spelling of 624423601 in words is "six hundred twenty-four million, four hundred twenty-three thousand, six hundred one".