68279377 has 2 divisors, whose sum is σ = 68279378. Its totient is φ = 68279376.

The previous prime is 68279363. The next prime is 68279381. The reversal of 68279377 is 77397286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 9235521 = 7684^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 68279377 - 2¹⁹ = 67755089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68279377.

It is not a weakly prime, because it can be changed into another prime (68279077) 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, 34139688 + 34139689.

It is an arithmetic number, because the mean of its divisors is an integer number (34139689).

Almost surely, 2^68279377 is an apocalyptic number.

It is an amenable number.

68279377 is a deficient number, since it is larger than the sum of its proper divisors (1).

68279377 is an equidigital number, since it uses as much as digits as its factorization.

68279377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 68279377 is about 8263.1336065684. The cubic root of 68279377 is about 408.7237270784.

The spelling of 68279377 in words is "sixty-eight million, two hundred seventy-nine thousand, three hundred seventy-seven".