613312680 has 128 divisors (see below), whose sum is σ = 1912273920. Its totient is φ = 157194240.

The previous prime is 613312673. The next prime is 613312691. The reversal of 613312680 is 86213316.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643084 + ... + 644036.

It is an arithmetic number, because the mean of its divisors is an integer number (14939640).

Almost surely, 2^613312680 is an apocalyptic number.

613312680 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 613312680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956136960).

613312680 is an abundant number, since it is smaller than the sum of its proper divisors (1298961240).

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

613312680 is a wasteful number, since it uses less digits than its factorization.

613312680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 613312680 is about 24765.1505143821. The cubic root of 613312680 is about 849.6250618580.

Adding to 613312680 its reverse (86213316), we get a palindrome (699525996).

The spelling of 613312680 in words is "six hundred thirteen million, three hundred twelve thousand, six hundred eighty".