67894861 has 2 divisors, whose sum is σ = 67894862. Its totient is φ = 67894860.

The previous prime is 67894831. The next prime is 67894877. The reversal of 67894861 is 16849876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43639236 + 24255625 = 6606^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 67894861 - 2¹⁷ = 67763789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67894831) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33947430 + 33947431.

It is an arithmetic number, because the mean of its divisors is an integer number (33947431).

Almost surely, 2^67894861 is an apocalyptic number.

It is an amenable number.

67894861 is a deficient number, since it is larger than the sum of its proper divisors (1).

67894861 is an equidigital number, since it uses as much as digits as its factorization.

67894861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 67894861 is about 8239.8337968675. The cubic root of 67894861 is about 407.9550383781.

The spelling of 67894861 in words is "sixty-seven million, eight hundred ninety-four thousand, eight hundred sixty-one".