66926147 has 2 divisors, whose sum is σ = 66926148. Its totient is φ = 66926146.

The previous prime is 66926129. The next prime is 66926173. The reversal of 66926147 is 74162966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66926147 - 2¹⁰ = 66925123 is a prime.

It is a Chen prime.

It is equal to p_3947657 and since 66926147 and 3947657 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (66926177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33463073 + 33463074.

It is an arithmetic number, because the mean of its divisors is an integer number (33463074).

Almost surely, 2^66926147 is an apocalyptic number.

66926147 is a deficient number, since it is larger than the sum of its proper divisors (1).

66926147 is an equidigital number, since it uses as much as digits as its factorization.

66926147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 66926147 is about 8180.8402380196. The cubic root of 66926147 is about 406.0055225858.

The spelling of 66926147 in words is "sixty-six million, nine hundred twenty-six thousand, one hundred forty-seven".