66499067 has 2 divisors, whose sum is σ = 66499068. Its totient is φ = 66499066.

The previous prime is 66499051. The next prime is 66499079. The reversal of 66499067 is 76099466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66499067 - 2⁴ = 66499051 is a prime.

It is not a weakly prime, because it can be changed into another prime (66499967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33249533 + 33249534.

It is an arithmetic number, because the mean of its divisors is an integer number (33249534).

Almost surely, 2^66499067 is an apocalyptic number.

66499067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66499067 is an equidigital number, since it uses as much as digits as its factorization.

66499067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 66499067 is about 8154.6960090490. The cubic root of 66499067 is about 405.1400562193.

The spelling of 66499067 in words is "sixty-six million, four hundred ninety-nine thousand, sixty-seven".