612506 has 4 divisors (see below), whose sum is σ = 918762. Its totient is φ = 306252.

The previous prime is 612497. The next prime is 612511. The reversal of 612506 is 605216.

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., 600625 + 11881 = 775^2 + 109^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153125 + ... + 153128.

2⁶¹²⁵⁰⁶ is an apocalyptic number.

612506 is a deficient number, since it is larger than the sum of its proper divisors (306256).

612506 is a wasteful number, since it uses less digits than its factorization.

612506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306255.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 612506 is about 782.6276253749. The cubic root of 612506 is about 84.9252399172.

The spelling of 612506 in words is "six hundred twelve thousand, five hundred six".