66049507 has 2 divisors, whose sum is σ = 66049508. Its totient is φ = 66049506.

The previous prime is 66049469. The next prime is 66049513. The reversal of 66049507 is 70594066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66049507 - 2¹⁹ = 65525219 is a prime.

It is not a weakly prime, because it can be changed into another prime (66049547) 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, 33024753 + 33024754.

It is an arithmetic number, because the mean of its divisors is an integer number (33024754).

Almost surely, 2^66049507 is an apocalyptic number.

66049507 is a deficient number, since it is larger than the sum of its proper divisors (1).

66049507 is an equidigital number, since it uses as much as digits as its factorization.

66049507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 66049507 is about 8127.0847786891. The cubic root of 66049507 is about 404.2250220956.

The spelling of 66049507 in words is "sixty-six million, forty-nine thousand, five hundred seven".