616630 has 32 divisors (see below), whose sum is σ = 1327104. Its totient is φ = 201696.

The previous prime is 616597. The next prime is 616639. The reversal of 616630 is 36616.

616630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616639) by changing a digit.

616630 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, 1419 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (41472).

2⁶¹⁶⁶³⁰ is an apocalyptic number.

616630 is an abundant number, since it is smaller than the sum of its proper divisors (710474).

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

616630 is a wasteful number, since it uses less digits than its factorization.

616630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 616630 is about 785.2579194125. The cubic root of 616630 is about 85.1154141524.

The spelling of 616630 in words is "six hundred sixteen thousand, six hundred thirty".