66455371 has 2 divisors, whose sum is σ = 66455372. Its totient is φ = 66455370.

The previous prime is 66455359. The next prime is 66455387. The reversal of 66455371 is 17355466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66455371 - 2⁷ = 66455243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66455371.

It is not a weakly prime, because it can be changed into another prime (66455171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33227685 + 33227686.

It is an arithmetic number, because the mean of its divisors is an integer number (33227686).

Almost surely, 2^66455371 is an apocalyptic number.

66455371 is a deficient number, since it is larger than the sum of its proper divisors (1).

66455371 is an equidigital number, since it uses as much as digits as its factorization.

66455371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 66455371 is about 8152.0163763329. The cubic root of 66455371 is about 405.0512986893.

The spelling of 66455371 in words is "sixty-six million, four hundred fifty-five thousand, three hundred seventy-one".