505504679 has 2 divisors, whose sum is σ = 505504680. Its totient is φ = 505504678.

The previous prime is 505504661. The next prime is 505504691. The reversal of 505504679 is 976405505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505504679 is a prime.

It is a Sophie Germain 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 (505504579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252752339 + 252752340.

It is an arithmetic number, because the mean of its divisors is an integer number (252752340).

Almost surely, 2^505504679 is an apocalyptic number.

505504679 is a deficient number, since it is larger than the sum of its proper divisors (1).

505504679 is an equidigital number, since it uses as much as digits as its factorization.

505504679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 505504679 is about 22483.4312105604. The cubic root of 505504679 is about 796.6026129376.

The spelling of 505504679 in words is "five hundred five million, five hundred four thousand, six hundred seventy-nine".