624797389 has 2 divisors, whose sum is σ = 624797390. Its totient is φ = 624797388.

The previous prime is 624797377. The next prime is 624797399. The reversal of 624797389 is 983797426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 558944164 + 65853225 = 23642^2 + 8115^2 .

It is a cyclic number.

It is not a de Polignac number, because 624797389 - 2⁹ = 624796877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624797399) 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, 312398694 + 312398695.

It is an arithmetic number, because the mean of its divisors is an integer number (312398695).

Almost surely, 2^624797389 is an apocalyptic number.

It is an amenable number.

624797389 is a deficient number, since it is larger than the sum of its proper divisors (1).

624797389 is an equidigital number, since it uses as much as digits as its factorization.

624797389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 55.

The square root of 624797389 is about 24995.9474515370. The cubic root of 624797389 is about 854.8955740366.

The spelling of 624797389 in words is "six hundred twenty-four million, seven hundred ninety-seven thousand, three hundred eighty-nine".