506722 has 4 divisors (see below), whose sum is σ = 760086. Its totient is φ = 253360.

The previous prime is 506699. The next prime is 506729. The reversal of 506722 is 227605.

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

It can be written as a sum of positive squares in only one way, i.e., 477481 + 29241 = 691^2 + 171^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 506693 and 506702.

It is not an unprimeable number, because it can be changed into a prime (506729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126679 + ... + 126682.

2⁵⁰⁶⁷²² is an apocalyptic number.

506722 is a deficient number, since it is larger than the sum of its proper divisors (253364).

506722 is a wasteful number, since it uses less digits than its factorization.

506722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253363.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 506722 is about 711.8440840521. The cubic root of 506722 is about 79.7241541230.

The spelling of 506722 in words is "five hundred six thousand, seven hundred twenty-two".