66854701 has 2 divisors, whose sum is σ = 66854702. Its totient is φ = 66854700.

The previous prime is 66854687. The next prime is 66854713. The reversal of 66854701 is 10745866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 8561476 = 7635^2 + 2926^2 .

It is a cyclic number.

It is not a de Polignac number, because 66854701 - 2⁷ = 66854573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66854741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33427350 + 33427351.

It is an arithmetic number, because the mean of its divisors is an integer number (33427351).

Almost surely, 2^66854701 is an apocalyptic number.

It is an amenable number.

66854701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66854701 is an equidigital number, since it uses as much as digits as its factorization.

66854701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 66854701 is about 8176.4724056282. The cubic root of 66854701 is about 405.8609961181.

The spelling of 66854701 in words is "sixty-six million, eight hundred fifty-four thousand, seven hundred one".