68426387 has 2 divisors, whose sum is σ = 68426388. Its totient is φ = 68426386.

The previous prime is 68426383. The next prime is 68426401. The reversal of 68426387 is 78362486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68426387 - 2² = 68426383 is a prime.

It is not a weakly prime, because it can be changed into another prime (68426381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34213193 + 34213194.

It is an arithmetic number, because the mean of its divisors is an integer number (34213194).

Almost surely, 2^68426387 is an apocalyptic number.

68426387 is a deficient number, since it is larger than the sum of its proper divisors (1).

68426387 is an equidigital number, since it uses as much as digits as its factorization.

68426387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 68426387 is about 8272.0243592485. The cubic root of 68426387 is about 409.0168531822.

The spelling of 68426387 in words is "sixty-eight million, four hundred twenty-six thousand, three hundred eighty-seven".