616739 has 4 divisors (see below), whose sum is σ = 620160. Its totient is φ = 613320.

The previous prime is 616729. The next prime is 616741. The reversal of 616739 is 937616.

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

It is a cyclic number.

It is not a de Polignac number, because 616739 - 2⁴ = 616723 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616739.

It is not an unprimeable number, because it can be changed into a prime (616729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (155040).

2⁶¹⁶⁷³⁹ is an apocalyptic number.

616739 is a deficient number, since it is larger than the sum of its proper divisors (3421).

616739 is a wasteful number, since it uses less digits than its factorization.

616739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its digits is 6804, while the sum is 32.

The square root of 616739 is about 785.3273202939. The cubic root of 616739 is about 85.1204290633.

The spelling of 616739 in words is "six hundred sixteen thousand, seven hundred thirty-nine".