616715220 has 72 divisors (see below), whose sum is σ = 1898078112. Its totient is φ = 149504960.

The previous prime is 616715213. The next prime is 616715221. The reversal of 616715220 is 22517616.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616715221) 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 23 ways as a sum of consecutive naturals, for example, 35214 + ... + 49733.

It is an arithmetic number, because the mean of its divisors is an integer number (26362196).

Almost surely, 2^616715220 is an apocalyptic number.

616715220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616715220 is an abundant number, since it is smaller than the sum of its proper divisors (1281362892).

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

616715220 is a wasteful number, since it uses less digits than its factorization.

616715220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84981 (or 84968 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 616715220 is about 24833.7516295867. The cubic root of 616715220 is about 851.1933503500.

The spelling of 616715220 in words is "six hundred sixteen million, seven hundred fifteen thousand, two hundred twenty".