66360871 has 2 divisors, whose sum is σ = 66360872. Its totient is φ = 66360870.

The previous prime is 66360859. The next prime is 66360881. The reversal of 66360871 is 17806366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66360871 - 2¹¹ = 66358823 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66360871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66360881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33180435 + 33180436.

It is an arithmetic number, because the mean of its divisors is an integer number (33180436).

Almost surely, 2^66360871 is an apocalyptic number.

66360871 is a deficient number, since it is larger than the sum of its proper divisors (1).

66360871 is an equidigital number, since it uses as much as digits as its factorization.

66360871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66360871 is about 8146.2182023317. The cubic root of 66360871 is about 404.8592123560.

The spelling of 66360871 in words is "sixty-six million, three hundred sixty thousand, eight hundred seventy-one".