616342879 has 2 divisors, whose sum is σ = 616342880. Its totient is φ = 616342878.

The previous prime is 616342877. The next prime is 616342921. The reversal of 616342879 is 978243616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616342879 - 2¹ = 616342877 is a prime.

Together with 616342877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616342877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308171439 + 308171440.

It is an arithmetic number, because the mean of its divisors is an integer number (308171440).

Almost surely, 2^616342879 is an apocalyptic number.

616342879 is a deficient number, since it is larger than the sum of its proper divisors (1).

616342879 is an equidigital number, since it uses as much as digits as its factorization.

616342879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 616342879 is about 24826.2538253358. The cubic root of 616342879 is about 851.0220135767.

The spelling of 616342879 in words is "six hundred sixteen million, three hundred forty-two thousand, eight hundred seventy-nine".