506986 has 4 divisors (see below), whose sum is σ = 760482. Its totient is φ = 253492.

The previous prime is 506983. The next prime is 506993. The reversal of 506986 is 689605.

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., 275625 + 231361 = 525^2 + 481^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (506983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126745 + ... + 126748.

2⁵⁰⁶⁹⁸⁶ is an apocalyptic number.

506986 is a deficient number, since it is larger than the sum of its proper divisors (253496).

506986 is a wasteful number, since it uses less digits than its factorization.

506986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253495.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 506986 is about 712.0294937711. The cubic root of 506986 is about 79.7379970340.

The spelling of 506986 in words is "five hundred six thousand, nine hundred eighty-six".