66363679 has 2 divisors, whose sum is σ = 66363680. Its totient is φ = 66363678.

The previous prime is 66363623. The next prime is 66363691. The reversal of 66363679 is 97636366.

66363679 = T₆₆₅₀ + T₆₆₅₁ + T₆₆₅₂.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66363679 - 2⁷ = 66363551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66363779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33181839 + 33181840.

It is an arithmetic number, because the mean of its divisors is an integer number (33181840).

Almost surely, 2^66363679 is an apocalyptic number.

66363679 is the 6652-nd centered triangular number.

66363679 is a deficient number, since it is larger than the sum of its proper divisors (1).

66363679 is an equidigital number, since it uses as much as digits as its factorization.

66363679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 46.

The square root of 66363679 is about 8146.3905504217. The cubic root of 66363679 is about 404.8649226921.

The spelling of 66363679 in words is "sixty-six million, three hundred sixty-three thousand, six hundred seventy-nine".