613899 has 40 divisors (see below), whose sum is σ = 1097712. Its totient is φ = 336960.

The previous prime is 613889. The next prime is 613903. The reversal of 613899 is 998316.

613899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 613899 - 2⁴ = 613883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613829) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11557 + ... + 11609.

2⁶¹³⁸⁹⁹ is an apocalyptic number.

613899 is a deficient number, since it is larger than the sum of its proper divisors (483813).

613899 is a wasteful number, since it uses less digits than its factorization.

613899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 80 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 613899 is about 783.5170706500. The cubic root of 613899 is about 84.9895719618.

The spelling of 613899 in words is "six hundred thirteen thousand, eight hundred ninety-nine".