616280 has 64 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 201600.

The previous prime is 616277. The next prime is 616289. The reversal of 616280 is 82616.

Added to its reverse (82616) it gives a square (698896 = 836²).

616280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

616280 is a Rhonda number in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8645 + ... + 8715.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2⁶¹⁶²⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829440).

616280 is an abundant number, since it is smaller than the sum of its proper divisors (1042600).

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

616280 is a wasteful number, since it uses less digits than its factorization.

616280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 616280 is about 785.0350310655. The cubic root of 616280 is about 85.0993072309.

Adding to 616280 its reverse (82616), we get a palindrome (698896).

The spelling of 616280 in words is "six hundred sixteen thousand, two hundred eighty".