506738717 has 4 divisors (see below), whose sum is σ = 520434396. Its totient is φ = 493043040.

The previous prime is 506738699. The next prime is 506738723. The reversal of 506738717 is 717837605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 717837605 = 5 ⋅143567521.

It can be written as a sum of positive squares in 2 ways, for example, as 191711716 + 315027001 = 13846^2 + 17749^2 .

It is a cyclic number.

It is not a de Polignac number, because 506738717 - 2²⁴ = 489961501 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 (506738117) 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, 6847784 + ... + 6847857.

It is an arithmetic number, because the mean of its divisors is an integer number (130108599).

Almost surely, 2^506738717 is an apocalyptic number.

It is an amenable number.

506738717 is a deficient number, since it is larger than the sum of its proper divisors (13695679).

506738717 is a wasteful number, since it uses less digits than its factorization.

506738717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13695678.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 506738717 is about 22510.8577579798. The cubic root of 506738717 is about 797.2503082597.

The spelling of 506738717 in words is "five hundred six million, seven hundred thirty-eight thousand, seven hundred seventeen".