501706 has 4 divisors (see below), whose sum is σ = 752562. Its totient is φ = 250852.

The previous prime is 501703. The next prime is 501707. The reversal of 501706 is 607105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607105 = 5 ⋅121421.

It can be written as a sum of positive squares in only one way, i.e., 312481 + 189225 = 559^2 + 435^2 .

It is not an unprimeable number, because it can be changed into a prime (501701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125425 + ... + 125428.

2⁵⁰¹⁷⁰⁶ is an apocalyptic number.

501706 is a deficient number, since it is larger than the sum of its proper divisors (250856).

501706 is a wasteful number, since it uses less digits than its factorization.

501706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250855.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 501706 is about 708.3120781125. The cubic root of 501706 is about 79.4602203318.

It can be divided in two parts, 50170 and 6, that added together give a square (50176 = 224²).

The spelling of 501706 in words is "five hundred one thousand, seven hundred six".