616275660 has 384 divisors, whose sum is σ = 2398814208. Its totient is φ = 114048000.

The previous prime is 616275643. The next prime is 616275661. The reversal of 616275660 is 66572616.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (616275661) 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 127 ways as a sum of consecutive naturals, for example, 1861695 + ... + 1862025.

It is an arithmetic number, because the mean of its divisors is an integer number (6246912).

Almost surely, 2^616275660 is an apocalyptic number.

616275660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616275660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199407104).

616275660 is an abundant number, since it is smaller than the sum of its proper divisors (1782538548).

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

616275660 is a wasteful number, since it uses less digits than its factorization.

616275660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 616275660 is about 24824.8999997986. The cubic root of 616275660 is about 850.9910746679.

The spelling of 616275660 in words is "six hundred sixteen million, two hundred seventy-five thousand, six hundred sixty".