613992 has 16 divisors (see below), whose sum is σ = 1535040. Its totient is φ = 204656.

The previous prime is 613981. The next prime is 613993. The reversal of 613992 is 299316.

613992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 613992.

It is not an unprimeable number, because it can be changed into a prime (613993) by changing a digit.

613992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12768 + ... + 12815.

It is an arithmetic number, because the mean of its divisors is an integer number (95940).

2⁶¹³⁹⁹² is an apocalyptic number.

It is an amenable number.

613992 is an abundant number, since it is smaller than the sum of its proper divisors (921048).

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

613992 is a wasteful number, since it uses less digits than its factorization.

613992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25592 (or 25588 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 613992 is about 783.5764161842. The cubic root of 613992 is about 84.9938634555.

The spelling of 613992 in words is "six hundred thirteen thousand, nine hundred ninety-two".