616625 has 8 divisors (see below), whose sum is σ = 769704. Its totient is φ = 493200.

The previous prime is 616597. The next prime is 616639. The reversal of 616625 is 526616.

It can be written as a sum of positive squares in 4 ways, for example, as 57121 + 559504 = 239^2 + 748^2 .

It is not a de Polignac number, because 616625 - 2¹⁴ = 600241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 616594 and 616603.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2342 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (96213).

2⁶¹⁶⁶²⁵ is an apocalyptic number.

It is an amenable number.

616625 is a deficient number, since it is larger than the sum of its proper divisors (153079).

616625 is an equidigital number, since it uses as much as digits as its factorization.

616625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948 (or 4938 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 616625 is about 785.2547357387. The cubic root of 616625 is about 85.1151840965.

Subtracting from 616625 its reverse (526616), we obtain a palindrome (90009).

The spelling of 616625 in words is "six hundred sixteen thousand, six hundred twenty-five".