68211379 has 2 divisors, whose sum is σ = 68211380. Its totient is φ = 68211378.

The previous prime is 68211337. The next prime is 68211383. The reversal of 68211379 is 97311286.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68211379 is a prime.

It is not a weakly prime, because it can be changed into another prime (68211329) 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, 34105689 + 34105690.

It is an arithmetic number, because the mean of its divisors is an integer number (34105690).

Almost surely, 2^68211379 is an apocalyptic number.

68211379 is a deficient number, since it is larger than the sum of its proper divisors (1).

68211379 is an equidigital number, since it uses as much as digits as its factorization.

68211379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 68211379 is about 8259.0180409053. The cubic root of 68211379 is about 408.5880022164.

The spelling of 68211379 in words is "sixty-eight million, two hundred eleven thousand, three hundred seventy-nine".