65613377 has 2 divisors, whose sum is σ = 65613378. Its totient is φ = 65613376.

The previous prime is 65613367. The next prime is 65613389. The reversal of 65613377 is 77331656.

65613377 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., 51782416 + 13830961 = 7196^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 65613377 - 2¹⁶ = 65547841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65613377.

It is not a weakly prime, because it can be changed into another prime (65613307) 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, 32806688 + 32806689.

It is an arithmetic number, because the mean of its divisors is an integer number (32806689).

Almost surely, 2^65613377 is an apocalyptic number.

It is an amenable number.

65613377 is a deficient number, since it is larger than the sum of its proper divisors (1).

65613377 is an equidigital number, since it uses as much as digits as its factorization.

65613377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 38.

The square root of 65613377 is about 8100.2084541078. The cubic root of 65613377 is about 403.3333469177. Note that the first 4 decimals are identical.

The spelling of 65613377 in words is "sixty-five million, six hundred thirteen thousand, three hundred seventy-seven".