616215377 has 2 divisors, whose sum is σ = 616215378. Its totient is φ = 616215376.

The previous prime is 616215367. The next prime is 616215421. The reversal of 616215377 is 773512616.

616215377 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 can be written as a sum of positive squares in only one way, i.e., 456420496 + 159794881 = 21364^2 + 12641^2 .

It is a cyclic number.

It is not a de Polignac number, because 616215377 - 2⁸ = 616215121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616215377.

It is not a weakly prime, because it can be changed into another prime (616215367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308107688 + 308107689.

It is an arithmetic number, because the mean of its divisors is an integer number (308107689).

Almost surely, 2^616215377 is an apocalyptic number.

It is an amenable number.

616215377 is a deficient number, since it is larger than the sum of its proper divisors (1).

616215377 is an equidigital number, since it uses as much as digits as its factorization.

616215377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 616215377 is about 24823.6858061006. The cubic root of 616215377 is about 850.9633262802.

The spelling of 616215377 in words is "six hundred sixteen million, two hundred fifteen thousand, three hundred seventy-seven".