617939 has 6 divisors (see below), whose sum is σ = 718884. Its totient is φ = 529620.

The previous prime is 617917. The next prime is 617951. The reversal of 617939 is 939716.

It is not a de Polignac number, because 617939 - 2¹⁶ = 552403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 617899 and 617908.

It is not an unprimeable number, because it can be changed into a prime (617959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6257 + ... + 6354.

It is an arithmetic number, because the mean of its divisors is an integer number (119814).

2⁶¹⁷⁹³⁹ is an apocalyptic number.

617939 is a deficient number, since it is larger than the sum of its proper divisors (100945).

617939 is a wasteful number, since it uses less digits than its factorization.

617939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625 (or 12618 counting only the distinct ones).

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

The square root of 617939 is about 786.0909616577. The cubic root of 617939 is about 85.1756000721.

It can be divided in two parts, 61 and 7939, that added together give a cube (8000 = 20³).

The spelling of 617939 in words is "six hundred seventeen thousand, nine hundred thirty-nine".