623655379 has 2 divisors, whose sum is σ = 623655380. Its totient is φ = 623655378.

The previous prime is 623655377. The next prime is 623655413. The reversal of 623655379 is 973556326.

623655379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623655379 - 2¹ = 623655377 is a prime.

Together with 623655377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (623655371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311827689 + 311827690.

It is an arithmetic number, because the mean of its divisors is an integer number (311827690).

Almost surely, 2^623655379 is an apocalyptic number.

623655379 is a deficient number, since it is larger than the sum of its proper divisors (1).

623655379 is an equidigital number, since it uses as much as digits as its factorization.

623655379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 46.

The square root of 623655379 is about 24973.0931003751. The cubic root of 623655379 is about 854.3743945600.

The spelling of 623655379 in words is "six hundred twenty-three million, six hundred fifty-five thousand, three hundred seventy-nine".