616664500 has 48 divisors (see below), whose sum is σ = 1405377792. Its totient is φ = 235936800.

The previous prime is 616664483. The next prime is 616664509. The reversal of 616664500 is 5466616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616664509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15312 + ... + 38311.

It is an arithmetic number, because the mean of its divisors is an integer number (29278704).

Almost surely, 2^616664500 is an apocalyptic number.

It is an amenable number.

616664500 is an abundant number, since it is smaller than the sum of its proper divisors (788713292).

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

616664500 is a wasteful number, since it uses less digits than its factorization.

616664500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53665 (or 53653 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 616664500 is about 24832.7304177370. The cubic root of 616664500 is about 851.1700150466.

It can be divided in two parts, 61666 and 4500, that added together give a palindrome (66166).

The spelling of 616664500 in words is "six hundred sixteen million, six hundred sixty-four thousand, five hundred".