66841007 has 2 divisors, whose sum is σ = 66841008. Its totient is φ = 66841006.

The previous prime is 66841001. The next prime is 66841037. The reversal of 66841007 is 70014866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66841007 - 2⁸ = 66840751 is a prime.

It is a Chen prime.

It is equal to p_3942932 and since 66841007 and 3942932 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66841001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33420503 + 33420504.

It is an arithmetic number, because the mean of its divisors is an integer number (33420504).

Almost surely, 2^66841007 is an apocalyptic number.

66841007 is a deficient number, since it is larger than the sum of its proper divisors (1).

66841007 is an equidigital number, since it uses as much as digits as its factorization.

66841007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 66841007 is about 8175.6349600505. The cubic root of 66841007 is about 405.8332830832.

The spelling of 66841007 in words is "sixty-six million, eight hundred forty-one thousand, seven".