66677353 has 2 divisors, whose sum is σ = 66677354. Its totient is φ = 66677352.

The previous prime is 66677333. The next prime is 66677363. The reversal of 66677353 is 35377666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44662489 + 22014864 = 6683^2 + 4692^2 .

It is a cyclic number.

It is not a de Polignac number, because 66677353 - 2¹⁷ = 66546281 is a prime.

It is not a weakly prime, because it can be changed into another prime (66677333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33338676 + 33338677.

It is an arithmetic number, because the mean of its divisors is an integer number (33338677).

Almost surely, 2^66677353 is an apocalyptic number.

It is an amenable number.

66677353 is a deficient number, since it is larger than the sum of its proper divisors (1).

66677353 is an equidigital number, since it uses as much as digits as its factorization.

66677353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 43.

The square root of 66677353 is about 8165.6201846522. The cubic root of 66677353 is about 405.5017973600.

The spelling of 66677353 in words is "sixty-six million, six hundred seventy-seven thousand, three hundred fifty-three".