67746121 has 2 divisors, whose sum is σ = 67746122. Its totient is φ = 67746120.

The previous prime is 67746103. The next prime is 67746131. The reversal of 67746121 is 12164776.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34810000 + 32936121 = 5900^2 + 5739^2 .

It is a cyclic number.

It is not a de Polignac number, because 67746121 - 2⁹ = 67745609 is a prime.

It is not a weakly prime, because it can be changed into another prime (67746131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33873060 + 33873061.

It is an arithmetic number, because the mean of its divisors is an integer number (33873061).

Almost surely, 2^67746121 is an apocalyptic number.

It is an amenable number.

67746121 is a deficient number, since it is larger than the sum of its proper divisors (1).

67746121 is an equidigital number, since it uses as much as digits as its factorization.

67746121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 67746121 is about 8230.8031807352. The cubic root of 67746121 is about 407.6569127353.

The spelling of 67746121 in words is "sixty-seven million, seven hundred forty-six thousand, one hundred twenty-one".