67336891 has 2 divisors, whose sum is σ = 67336892. Its totient is φ = 67336890.

The previous prime is 67336861. The next prime is 67336903. The reversal of 67336891 is 19863376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67336891 - 2¹³ = 67328699 is a prime.

It is not a weakly prime, because it can be changed into another prime (67336831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33668445 + 33668446.

It is an arithmetic number, because the mean of its divisors is an integer number (33668446).

Almost surely, 2^67336891 is an apocalyptic number.

67336891 is a deficient number, since it is larger than the sum of its proper divisors (1).

67336891 is an equidigital number, since it uses as much as digits as its factorization.

67336891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 67336891 is about 8205.9058610247. The cubic root of 67336891 is about 406.8344180122.

The spelling of 67336891 in words is "sixty-seven million, three hundred thirty-six thousand, eight hundred ninety-one".