66484069 has 2 divisors, whose sum is σ = 66484070. Its totient is φ = 66484068.

The previous prime is 66484051. The next prime is 66484087. The reversal of 66484069 is 96048466.

It is a balanced prime because it is at equal distance from previous prime (66484051) and next prime (66484087).

It can be written as a sum of positive squares in only one way, i.e., 54199044 + 12285025 = 7362^2 + 3505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66484069 is a prime.

It is a super-2 number, since 2×66484069² = 8840262861593522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66484009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33242034 + 33242035.

It is an arithmetic number, because the mean of its divisors is an integer number (33242035).

Almost surely, 2^66484069 is an apocalyptic number.

It is an amenable number.

66484069 is a deficient number, since it is larger than the sum of its proper divisors (1).

66484069 is an equidigital number, since it uses as much as digits as its factorization.

66484069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 66484069 is about 8153.7763643603. The cubic root of 66484069 is about 405.1095959051.

The spelling of 66484069 in words is "sixty-six million, four hundred eighty-four thousand, sixty-nine".