613101720 has 192 divisors, whose sum is σ = 2334355200. Its totient is φ = 127384320.

The previous prime is 613101707. The next prime is 613101737. The reversal of 613101720 is 27101316.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 59941 + ... + 69419.

It is an arithmetic number, because the mean of its divisors is an integer number (12158100).

Almost surely, 2^613101720 is an apocalyptic number.

613101720 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 613101720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167177600).

613101720 is an abundant number, since it is smaller than the sum of its proper divisors (1721253480).

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

613101720 is a wasteful number, since it uses less digits than its factorization.

613101720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9518 (or 9507 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 613101720 is about 24760.8909371210. The cubic root of 613101720 is about 849.5276360460.

The spelling of 613101720 in words is "six hundred thirteen million, one hundred one thousand, seven hundred twenty".