505672679 has 4 divisors (see below), whose sum is σ = 512599776. Its totient is φ = 498745584.

The previous prime is 505672663. The next prime is 505672693. The reversal of 505672679 is 976276505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505672679 - 2⁴ = 505672663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505672879) 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 in 3 ways as a sum of consecutive naturals, for example, 3463439 + ... + 3463584.

It is an arithmetic number, because the mean of its divisors is an integer number (128149944).

Almost surely, 2^505672679 is an apocalyptic number.

505672679 is a deficient number, since it is larger than the sum of its proper divisors (6927097).

505672679 is an equidigital number, since it uses as much as digits as its factorization.

505672679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927096.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 505672679 is about 22487.1669847493. The cubic root of 505672679 is about 796.6908511028.

The spelling of 505672679 in words is "five hundred five million, six hundred seventy-two thousand, six hundred seventy-nine".