646067 has 2 divisors, whose sum is σ = 646068. Its totient is φ = 646066.

The previous prime is 646039. The next prime is 646073. The reversal of 646067 is 760646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646067 - 2⁶ = 646003 is a prime.

It is a Chen prime.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 646067.

It is not a weakly prime, because it can be changed into another prime (646027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323033 + 323034.

It is an arithmetic number, because the mean of its divisors is an integer number (323034).

2⁶⁴⁶⁰⁶⁷ is an apocalyptic number.

646067 is a deficient number, since it is larger than the sum of its proper divisors (1).

646067 is an equidigital number, since it uses as much as digits as its factorization.

646067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 646067 is about 803.7829308961. The cubic root of 646067 is about 86.4488431963.

The spelling of 646067 in words is "six hundred forty-six thousand, sixty-seven".