613968 has 20 divisors (see below), whose sum is σ = 1586208. Its totient is φ = 204640.

The previous prime is 613967. The next prime is 613969. The reversal of 613968 is 869316.

It is an interprime number because it is at equal distance from previous prime (613967) and next prime (613969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6348 + ... + 6443.

2⁶¹³⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

613968 is an abundant number, since it is smaller than the sum of its proper divisors (972240).

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

613968 is a wasteful number, since it uses less digits than its factorization.

613968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12802 (or 12796 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 613968 is about 783.5611016379. The cubic root of 613968 is about 84.9927560147.

The spelling of 613968 in words is "six hundred thirteen thousand, nine hundred sixty-eight".