67945693 has 2 divisors, whose sum is σ = 67945694. Its totient is φ = 67945692.

The previous prime is 67945679. The next prime is 67945697. The reversal of 67945693 is 39654976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 15129 = 8242^2 + 123^2 .

It is a cyclic number.

It is not a de Polignac number, because 67945693 - 2²⁵ = 34391261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67945697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33972846 + 33972847.

It is an arithmetic number, because the mean of its divisors is an integer number (33972847).

Almost surely, 2^67945693 is an apocalyptic number.

It is an amenable number.

67945693 is a deficient number, since it is larger than the sum of its proper divisors (1).

67945693 is an equidigital number, since it uses as much as digits as its factorization.

67945693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 67945693 is about 8242.9177479822. The cubic root of 67945693 is about 408.0568231923.

The spelling of 67945693 in words is "sixty-seven million, nine hundred forty-five thousand, six hundred ninety-three".