68442767 has 2 divisors, whose sum is σ = 68442768. Its totient is φ = 68442766.

The previous prime is 68442757. The next prime is 68442791. The reversal of 68442767 is 76724486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68442767 - 2¹⁴ = 68426383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68442727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34221383 + 34221384.

It is an arithmetic number, because the mean of its divisors is an integer number (34221384).

Almost surely, 2^68442767 is an apocalyptic number.

68442767 is a deficient number, since it is larger than the sum of its proper divisors (1).

68442767 is an equidigital number, since it uses as much as digits as its factorization.

68442767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 44.

The square root of 68442767 is about 8273.0143841287. The cubic root of 68442767 is about 409.0494875786.

The spelling of 68442767 in words is "sixty-eight million, four hundred forty-two thousand, seven hundred sixty-seven".