505680673 has 4 divisors (see below), whose sum is σ = 512803008. Its totient is φ = 498558340.

The previous prime is 505680631. The next prime is 505680683. The reversal of 505680673 is 376086505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505680673 - 2¹³ = 505672481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505680683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3561061 + ... + 3561202.

It is an arithmetic number, because the mean of its divisors is an integer number (128200752).

Almost surely, 2^505680673 is an apocalyptic number.

It is an amenable number.

505680673 is a deficient number, since it is larger than the sum of its proper divisors (7122335).

505680673 is an equidigital number, since it uses as much as digits as its factorization.

505680673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122334.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 505680673 is about 22487.3447298697. The cubic root of 505680673 is about 796.6950492817.

The spelling of 505680673 in words is "five hundred five million, six hundred eighty thousand, six hundred seventy-three".