616604550 has 48 divisors (see below), whose sum is σ = 1538621760. Its totient is φ = 163412640.

The previous prime is 616604533. The next prime is 616604567. The reversal of 616604550 is 55406616.

It is an interprime number because it is at equal distance from previous prime (616604533) and next prime (616604567).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11841 + ... + 37059.

It is an arithmetic number, because the mean of its divisors is an integer number (32054620).

Almost surely, 2^616604550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616604550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769310880).

616604550 is an abundant number, since it is smaller than the sum of its proper divisors (922017210).

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

616604550 is a wasteful number, since it uses less digits than its factorization.

616604550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25397 (or 25392 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 616604550 is about 24831.5233121128. The cubic root of 616604550 is about 851.1424315464.

The spelling of 616604550 in words is "six hundred sixteen million, six hundred four thousand, five hundred fifty".