67713791 has 2 divisors, whose sum is σ = 67713792. Its totient is φ = 67713790.

The previous prime is 67713707. The next prime is 67713799. The reversal of 67713791 is 19731776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67713791 - 2¹⁴ = 67697407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67713799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33856895 + 33856896.

It is an arithmetic number, because the mean of its divisors is an integer number (33856896).

Almost surely, 2^67713791 is an apocalyptic number.

67713791 is a deficient number, since it is larger than the sum of its proper divisors (1).

67713791 is an equidigital number, since it uses as much as digits as its factorization.

67713791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 41.

The square root of 67713791 is about 8228.8389825054. The cubic root of 67713791 is about 407.5920546796.

The spelling of 67713791 in words is "sixty-seven million, seven hundred thirteen thousand, seven hundred ninety-one".