613860 has 48 divisors (see below), whose sum is σ = 1853376. Its totient is φ = 150912.

The previous prime is 613849. The next prime is 613861. The reversal of 613860 is 68316.

It is a self number, because there is not a number n which added to its sum of digits gives 613860.

It is not an unprimeable number, because it can be changed into a prime (613861) 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 15 ways as a sum of consecutive naturals, for example, 387 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (38612).

2⁶¹³⁸⁶⁰ is an apocalyptic number.

613860 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 613860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926688).

613860 is an abundant number, since it is smaller than the sum of its proper divisors (1239516).

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

613860 is a wasteful number, since it uses less digits than its factorization.

613860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 613860 is about 783.4921824754. The cubic root of 613860 is about 84.9877721741.

The spelling of 613860 in words is "six hundred thirteen thousand, eight hundred sixty".