616432679 has 2 divisors, whose sum is σ = 616432680. Its totient is φ = 616432678.

The previous prime is 616432673. The next prime is 616432681. The reversal of 616432679 is 976234616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616432679 is a prime.

Together with 616432681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616432673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308216339 + 308216340.

It is an arithmetic number, because the mean of its divisors is an integer number (308216340).

Almost surely, 2^616432679 is an apocalyptic number.

616432679 is a deficient number, since it is larger than the sum of its proper divisors (1).

616432679 is an equidigital number, since it uses as much as digits as its factorization.

616432679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 616432679 is about 24828.0623287441. The cubic root of 616432679 is about 851.0633423393.

The spelling of 616432679 in words is "six hundred sixteen million, four hundred thirty-two thousand, six hundred seventy-nine".