505668707 has 4 divisors (see below), whose sum is σ = 515209680. Its totient is φ = 496127736.

The previous prime is 505668697. The next prime is 505668733. The reversal of 505668707 is 707866505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707866505 = 5 ⋅141573301.

It is a cyclic number.

It is not a de Polignac number, because 505668707 - 2²⁰ = 504620131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505668607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4770407 + ... + 4770512.

It is an arithmetic number, because the mean of its divisors is an integer number (128802420).

Almost surely, 2^505668707 is an apocalyptic number.

505668707 is a deficient number, since it is larger than the sum of its proper divisors (9540973).

505668707 is an equidigital number, since it uses as much as digits as its factorization.

505668707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540972.

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 505668707 is about 22487.0786675371. The cubic root of 505668707 is about 796.6887651260.

The spelling of 505668707 in words is "five hundred five million, six hundred sixty-eight thousand, seven hundred seven".