67966739 has 2 divisors, whose sum is σ = 67966740. Its totient is φ = 67966738.

The previous prime is 67966729. The next prime is 67966753. The reversal of 67966739 is 93766976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67966739 - 2¹⁶ = 67901203 is a prime.

It is a super-2 number, since 2×67966739² = 9238955220588242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67966709) 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, 33983369 + 33983370.

It is an arithmetic number, because the mean of its divisors is an integer number (33983370).

Almost surely, 2^67966739 is an apocalyptic number.

67966739 is a deficient number, since it is larger than the sum of its proper divisors (1).

67966739 is an equidigital number, since it uses as much as digits as its factorization.

67966739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 53.

The square root of 67966739 is about 8244.1942602052. The cubic root of 67966739 is about 408.0989503529.

The spelling of 67966739 in words is "sixty-seven million, nine hundred sixty-six thousand, seven hundred thirty-nine".