616999 has 2 divisors, whose sum is σ = 617000. Its totient is φ = 616998.

The previous prime is 616997. The next prime is 617011. The reversal of 616999 is 999616.

616999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616999 - 2¹ = 616997 is a prime.

Together with 616997, it forms a pair of twin primes.

616999 is a modest number, since divided by 999 gives 616 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308499 + 308500.

It is an arithmetic number, because the mean of its divisors is an integer number (308500).

2⁶¹⁶⁹⁹⁹ is an apocalyptic number.

616999 is a deficient number, since it is larger than the sum of its proper divisors (1).

616999 is an equidigital number, since it uses as much as digits as its factorization.

616999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 40.

The square root of 616999 is about 785.4928389234. The cubic root of 616999 is about 85.1323888509.

The spelling of 616999 in words is "six hundred sixteen thousand, nine hundred ninety-nine".