66084677 has 2 divisors, whose sum is σ = 66084678. Its totient is φ = 66084676.

The previous prime is 66084671. The next prime is 66084709. The reversal of 66084677 is 77648066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54257956 + 11826721 = 7366^2 + 3439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66084677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66084671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33042338 + 33042339.

It is an arithmetic number, because the mean of its divisors is an integer number (33042339).

Almost surely, 2^66084677 is an apocalyptic number.

It is an amenable number.

66084677 is a deficient number, since it is larger than the sum of its proper divisors (1).

66084677 is an equidigital number, since it uses as much as digits as its factorization.

66084677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 66084677 is about 8129.2482432264. The cubic root of 66084677 is about 404.2967565267.

The spelling of 66084677 in words is "sixty-six million, eighty-four thousand, six hundred seventy-seven".