613994 has 8 divisors (see below), whose sum is σ = 924420. Its totient is φ = 305856.

The previous prime is 613993. The next prime is 613999. The reversal of 613994 is 499316.

It can be written as a sum of positive squares in 2 ways, for example, as 508369 + 105625 = 713^2 + 325^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 613994.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 613994.

It is not an unprimeable number, because it can be changed into a prime (613993) 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 3 ways as a sum of consecutive naturals, for example, 512 + ... + 1220.

2⁶¹³⁹⁹⁴ is an apocalyptic number.

613994 is a deficient number, since it is larger than the sum of its proper divisors (310426).

613994 is a wasteful number, since it uses less digits than its factorization.

613994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its digits is 5832, while the sum is 32.

The square root of 613994 is about 783.5776923828. The cubic root of 613994 is about 84.9939557409.

The spelling of 613994 in words is "six hundred thirteen thousand, nine hundred ninety-four".