616387 has 2 divisors, whose sum is σ = 616388. Its totient is φ = 616386.

The previous prime is 616367. The next prime is 616391. The reversal of 616387 is 783616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616387 - 2¹⁵ = 583619 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (616307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308193 + 308194.

It is an arithmetic number, because the mean of its divisors is an integer number (308194).

2⁶¹⁶³⁸⁷ is an apocalyptic number.

616387 is a deficient number, since it is larger than the sum of its proper divisors (1).

616387 is an equidigital number, since it uses as much as digits as its factorization.

616387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 616387 is about 785.1031779327. The cubic root of 616387 is about 85.1042319940.

The spelling of 616387 in words is "six hundred sixteen thousand, three hundred eighty-seven".