68203391 has 2 divisors, whose sum is σ = 68203392. Its totient is φ = 68203390.

The previous prime is 68203367. The next prime is 68203397. The reversal of 68203391 is 19330286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68203391 - 2⁶ = 68203327 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68203397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34101695 + 34101696.

It is an arithmetic number, because the mean of its divisors is an integer number (34101696).

Almost surely, 2^68203391 is an apocalyptic number.

68203391 is a deficient number, since it is larger than the sum of its proper divisors (1).

68203391 is an equidigital number, since it uses as much as digits as its factorization.

68203391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 68203391 is about 8258.5344341475. The cubic root of 68203391 is about 408.5720521485.

The spelling of 68203391 in words is "sixty-eight million, two hundred three thousand, three hundred ninety-one".