67161673 has 2 divisors, whose sum is σ = 67161674. Its totient is φ = 67161672.

The previous prime is 67161641. The next prime is 67161701. The reversal of 67161673 is 37616176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 11614464 = 7453^2 + 3408^2 .

It is a cyclic number.

It is not a de Polignac number, because 67161673 - 2⁵ = 67161641 is a prime.

It is equal to p_3960685 and since 67161673 and 3960685 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (67161973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33580836 + 33580837.

It is an arithmetic number, because the mean of its divisors is an integer number (33580837).

Almost surely, 2^67161673 is an apocalyptic number.

It is an amenable number.

67161673 is a deficient number, since it is larger than the sum of its proper divisors (1).

67161673 is an equidigital number, since it uses as much as digits as its factorization.

67161673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 67161673 is about 8195.2225717182. Note that the first 3 decimals coincide. The cubic root of 67161673 is about 406.4812355206.

The spelling of 67161673 in words is "sixty-seven million, one hundred sixty-one thousand, six hundred seventy-three".