66704299 has 2 divisors, whose sum is σ = 66704300. Its totient is φ = 66704298.

The previous prime is 66704257. The next prime is 66704317. The reversal of 66704299 is 99240766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66704299 - 2¹³ = 66696107 is a prime.

It is not a weakly prime, because it can be changed into another prime (66704249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33352149 + 33352150.

It is an arithmetic number, because the mean of its divisors is an integer number (33352150).

Almost surely, 2^66704299 is an apocalyptic number.

66704299 is a deficient number, since it is larger than the sum of its proper divisors (1).

66704299 is an equidigital number, since it uses as much as digits as its factorization.

66704299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 66704299 is about 8167.2699845175. The cubic root of 66704299 is about 405.5564145044.

The spelling of 66704299 in words is "sixty-six million, seven hundred four thousand, two hundred ninety-nine".