66320627 has 2 divisors, whose sum is σ = 66320628. Its totient is φ = 66320626.

The previous prime is 66320623. The next prime is 66320647. The reversal of 66320627 is 72602366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66320627 - 2² = 66320623 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 66320593 and 66320602.

It is not a weakly prime, because it can be changed into another prime (66320623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33160313 + 33160314.

It is an arithmetic number, because the mean of its divisors is an integer number (33160314).

Almost surely, 2^66320627 is an apocalyptic number.

66320627 is a deficient number, since it is larger than the sum of its proper divisors (1).

66320627 is an equidigital number, since it uses as much as digits as its factorization.

66320627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66320627 is about 8143.7477244816. The cubic root of 66320627 is about 404.7773546356. Note that the first 3 decimals are identical.

It can be divided in two parts, 66320 and 627, that multiplied together give a triangular number (41582640 = T₉₁₁₉).

The spelling of 66320627 in words is "sixty-six million, three hundred twenty thousand, six hundred twenty-seven".