506656379 has 2 divisors, whose sum is σ = 506656380. Its totient is φ = 506656378.

The previous prime is 506656373. The next prime is 506656399. The reversal of 506656379 is 973656605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506656379 - 2²⁴ = 489879163 is a prime.

It is not a weakly prime, because it can be changed into another prime (506656373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253328189 + 253328190.

It is an arithmetic number, because the mean of its divisors is an integer number (253328190).

Almost surely, 2^506656379 is an apocalyptic number.

506656379 is a deficient number, since it is larger than the sum of its proper divisors (1).

506656379 is an equidigital number, since it uses as much as digits as its factorization.

506656379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1020600, while the sum is 47.

The square root of 506656379 is about 22509.0288328928. The cubic root of 506656379 is about 797.2071252219.

The spelling of 506656379 in words is "five hundred six million, six hundred fifty-six thousand, three hundred seventy-nine".