616620 has 48 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 159936.

The previous prime is 616597. The next prime is 616639. The reversal of 616620 is 26616.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616620.

It is an unprimeable number.

616620 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 15 ways as a sum of consecutive naturals, for example, 2461 + ... + 2699.

It is an arithmetic number, because the mean of its divisors is an integer number (36960).

2⁶¹⁶⁶²⁰ is an apocalyptic number.

616620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887040).

616620 is an abundant number, since it is smaller than the sum of its proper divisors (1157460).

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

616620 is a wasteful number, since it uses less digits than its factorization.

616620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 616620 is about 785.2515520520. The cubic root of 616620 is about 85.1149540393.

The spelling of 616620 in words is "six hundred sixteen thousand, six hundred twenty".