616425216 has 144 divisors (see below), whose sum is σ = 1806634368. Its totient is φ = 185036800.

The previous prime is 616425211. The next prime is 616425239. The reversal of 616425216 is 612524616.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616425211) 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, 1106410 + ... + 1106966.

It is an arithmetic number, because the mean of its divisors is an integer number (12546072).

Almost surely, 2^616425216 is an apocalyptic number.

616425216 is a gapful number since it is divisible by the number (66) 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 616425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903317184).

616425216 is an abundant number, since it is smaller than the sum of its proper divisors (1190209152).

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

616425216 is a wasteful number, since it uses less digits than its factorization.

616425216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 704 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 616425216 is about 24827.9120346436. The cubic root of 616425216 is about 851.0599077867.

The spelling of 616425216 in words is "six hundred sixteen million, four hundred twenty-five thousand, two hundred sixteen".