66830611 has 2 divisors, whose sum is σ = 66830612. Its totient is φ = 66830610.

The previous prime is 66830597. The next prime is 66830627. The reversal of 66830611 is 11603866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66830611 - 2¹³ = 66822419 is a prime.

It is not a weakly prime, because it can be changed into another prime (66830641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33415305 + 33415306.

It is an arithmetic number, because the mean of its divisors is an integer number (33415306).

Almost surely, 2^66830611 is an apocalyptic number.

66830611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66830611 is an equidigital number, since it uses as much as digits as its factorization.

66830611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 66830611 is about 8174.9991437308. Note that the first 3 decimals coincide. The cubic root of 66830611 is about 405.8122418005.

The spelling of 66830611 in words is "sixty-six million, eight hundred thirty thousand, six hundred eleven".