612520 has 16 divisors (see below), whose sum is σ = 1378260. Its totient is φ = 244992.

The previous prime is 612511. The next prime is 612553. The reversal of 612520 is 25216.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 119716 = 702^2 + 346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612494 and 612503.

It is an unprimeable number.

612520 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7617 + ... + 7696.

2⁶¹²⁵²⁰ is an apocalyptic number.

It is an amenable number.

612520 is an abundant number, since it is smaller than the sum of its proper divisors (765740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612520 is a wasteful number, since it uses less digits than its factorization.

612520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15324 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 612520 is about 782.6365695519. The cubic root of 612520 is about 84.9258869554.

Adding to 612520 its reverse (25216), we get a palindrome (637736).

It can be divided in two parts, 6125 and 20, that multiplied together give a square (122500 = 350²).

The spelling of 612520 in words is "six hundred twelve thousand, five hundred twenty".