67166413 has 2 divisors, whose sum is σ = 67166414. Its totient is φ = 67166412.

The previous prime is 67166383. The next prime is 67166419. The reversal of 67166413 is 31466176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43322724 + 23843689 = 6582^2 + 4883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67166413 is a prime.

It is a super-2 number, since 2×67166413² = 9022654070573138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67166419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33583206 + 33583207.

It is an arithmetic number, because the mean of its divisors is an integer number (33583207).

Almost surely, 2^67166413 is an apocalyptic number.

It is an amenable number.

67166413 is a deficient number, since it is larger than the sum of its proper divisors (1).

67166413 is an equidigital number, since it uses as much as digits as its factorization.

67166413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 67166413 is about 8195.5117594937. The cubic root of 67166413 is about 406.4907978977.

The spelling of 67166413 in words is "sixty-seven million, one hundred sixty-six thousand, four hundred thirteen".