66350671 has 2 divisors, whose sum is σ = 66350672. Its totient is φ = 66350670.

The previous prime is 66350659. The next prime is 66350693. The reversal of 66350671 is 17605366.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66350671 - 2⁵ = 66350639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66350611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33175335 + 33175336.

It is an arithmetic number, because the mean of its divisors is an integer number (33175336).

Almost surely, 2^66350671 is an apocalyptic number.

66350671 is a deficient number, since it is larger than the sum of its proper divisors (1).

66350671 is an equidigital number, since it uses as much as digits as its factorization.

66350671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 66350671 is about 8145.5921208958. The cubic root of 66350671 is about 404.8384683267.

The spelling of 66350671 in words is "sixty-six million, three hundred fifty thousand, six hundred seventy-one".