66086953 has 2 divisors, whose sum is σ = 66086954. Its totient is φ = 66086952.

The previous prime is 66086927. The next prime is 66086983. The reversal of 66086953 is 35968066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45265984 + 20820969 = 6728^2 + 4563^2 .

It is a cyclic number.

It is not a de Polignac number, because 66086953 - 2⁹ = 66086441 is a prime.

It is not a weakly prime, because it can be changed into another prime (66086983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33043476 + 33043477.

It is an arithmetic number, because the mean of its divisors is an integer number (33043477).

Almost surely, 2^66086953 is an apocalyptic number.

It is an amenable number.

66086953 is a deficient number, since it is larger than the sum of its proper divisors (1).

66086953 is an equidigital number, since it uses as much as digits as its factorization.

66086953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 66086953 is about 8129.3882303652. The cubic root of 66086953 is about 404.3013978893.

The spelling of 66086953 in words is "sixty-six million, eighty-six thousand, nine hundred fifty-three".