616453820 has 48 divisors (see below), whose sum is σ = 1354752000. Its totient is φ = 235177536.

The previous prime is 616453793. The next prime is 616453823. The reversal of 616453820 is 28354616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616453823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174431 + ... + 177929.

It is an arithmetic number, because the mean of its divisors is an integer number (28224000).

Almost surely, 2^616453820 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 616453820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677376000).

616453820 is an abundant number, since it is smaller than the sum of its proper divisors (738298180).

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

616453820 is a wasteful number, since it uses less digits than its factorization.

616453820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3912 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 616453820 is about 24828.4880731792. The cubic root of 616453820 is about 851.0730715036.

The spelling of 616453820 in words is "six hundred sixteen million, four hundred fifty-three thousand, eight hundred twenty".