617399 has 4 divisors (see below), whose sum is σ = 621264. Its totient is φ = 613536.

The previous prime is 617387. The next prime is 617401. The reversal of 617399 is 993716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682 + ... + 2015.

It is an arithmetic number, because the mean of its divisors is an integer number (155316).

2⁶¹⁷³⁹⁹ is an apocalyptic number.

617399 is a deficient number, since it is larger than the sum of its proper divisors (3865).

617399 is a wasteful number, since it uses less digits than its factorization.

617399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864.

The product of its digits is 10206, while the sum is 35.

The square root of 617399 is about 785.7474148860. The cubic root of 617399 is about 85.1507819652.

The spelling of 617399 in words is "six hundred seventeen thousand, three hundred ninety-nine".