66514601 has 2 divisors, whose sum is σ = 66514602. Its totient is φ = 66514600.

The previous prime is 66514589. The next prime is 66514627. The reversal of 66514601 is 10641566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 12418576 = 7355^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 66514601 - 2¹⁴ = 66498217 is a prime.

It is not a weakly prime, because it can be changed into another prime (66514631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33257300 + 33257301.

It is an arithmetic number, because the mean of its divisors is an integer number (33257301).

Almost surely, 2^66514601 is an apocalyptic number.

It is an amenable number.

66514601 is a deficient number, since it is larger than the sum of its proper divisors (1).

66514601 is an equidigital number, since it uses as much as digits as its factorization.

66514601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 66514601 is about 8155.6484107642. The cubic root of 66514601 is about 405.1716002992.

The spelling of 66514601 in words is "sixty-six million, five hundred fourteen thousand, six hundred one".