623405341 has 16 divisors (see below), whose sum is σ = 693674800. Its totient is φ = 559825344.

The previous prime is 623405339. The next prime is 623405359. The reversal of 623405341 is 143504326.

It can be written as a sum of positive squares in 8 ways, for example, as 129276900 + 494128441 = 11370^2 + 22229^2 .

It is not a de Polignac number, because 623405341 - 2¹ = 623405339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623405311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77455 + ... + 85123.

It is an arithmetic number, because the mean of its divisors is an integer number (43354675).

Almost surely, 2^623405341 is an apocalyptic number.

It is an amenable number.

623405341 is a deficient number, since it is larger than the sum of its proper divisors (70269459).

623405341 is an equidigital number, since it uses as much as digits as its factorization.

623405341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7745 (or 7719 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 623405341 is about 24968.0864505072. The cubic root of 623405341 is about 854.2601997511.

Adding to 623405341 its reverse (143504326), we get a palindrome (766909667).

The spelling of 623405341 in words is "six hundred twenty-three million, four hundred five thousand, three hundred forty-one".