616601720 has 32 divisors (see below), whose sum is σ = 1585548000. Its totient is φ = 211406208.

The previous prime is 616601717. The next prime is 616601729. The reversal of 616601720 is 27106616.

It is a super-2 number, since 2×616601720² = 760395362213916800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616601729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1100795 + ... + 1101354.

It is an arithmetic number, because the mean of its divisors is an integer number (49548375).

Almost surely, 2^616601720 is an apocalyptic number.

It is an amenable number.

616601720 is an abundant number, since it is smaller than the sum of its proper divisors (968946280).

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

616601720 is a wasteful number, since it uses less digits than its factorization.

616601720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202167 (or 2202163 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 616601720 is about 24831.4663280282. The cubic root of 616601720 is about 851.1411293954.

The spelling of 616601720 in words is "six hundred sixteen million, six hundred one thousand, seven hundred twenty".