67140911 has 2 divisors, whose sum is σ = 67140912. Its totient is φ = 67140910.

The previous prime is 67140883. The next prime is 67140923. The reversal of 67140911 is 11904176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67140911 - 2¹⁴ = 67124527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67140991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33570455 + 33570456.

It is an arithmetic number, because the mean of its divisors is an integer number (33570456).

Almost surely, 2^67140911 is an apocalyptic number.

67140911 is a deficient number, since it is larger than the sum of its proper divisors (1).

67140911 is an equidigital number, since it uses as much as digits as its factorization.

67140911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 67140911 is about 8193.9557601930. The cubic root of 67140911 is about 406.4393453928.

The spelling of 67140911 in words is "sixty-seven million, one hundred forty thousand, nine hundred eleven".