616620611 has 2 divisors, whose sum is σ = 616620612. Its totient is φ = 616620610.

The previous prime is 616620581. The next prime is 616620619. The reversal of 616620611 is 116026616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616620611 - 2¹⁰ = 616619587 is a prime.

It is not a weakly prime, because it can be changed into another prime (616620619) 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, 308310305 + 308310306.

It is an arithmetic number, because the mean of its divisors is an integer number (308310306).

Almost surely, 2^616620611 is an apocalyptic number.

616620611 is a deficient number, since it is larger than the sum of its proper divisors (1).

616620611 is an equidigital number, since it uses as much as digits as its factorization.

616620611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 616620611 is about 24831.8467094173. The cubic root of 616620611 is about 851.1498215232.

The spelling of 616620611 in words is "six hundred sixteen million, six hundred twenty thousand, six hundred eleven".