506455679 has 4 divisors (see below), whose sum is σ = 507731784. Its totient is φ = 505179576.

The previous prime is 506455643. The next prime is 506455693. The reversal of 506455679 is 976554605.

It is a happy number.

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 506455679 - 2²⁰ = 505407103 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 (506455639) 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, 637457 + ... + 638250.

It is an arithmetic number, because the mean of its divisors is an integer number (126932946).

Almost surely, 2^506455679 is an apocalyptic number.

506455679 is a deficient number, since it is larger than the sum of its proper divisors (1276105).

506455679 is a wasteful number, since it uses less digits than its factorization.

506455679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276104.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 506455679 is about 22504.5701802989. The cubic root of 506455679 is about 797.1018463728.

The spelling of 506455679 in words is "five hundred six million, four hundred fifty-five thousand, six hundred seventy-nine".