66969105 has 32 divisors (see below), whose sum is σ = 124149504. Its totient is φ = 30191616.

The previous prime is 66969101. The next prime is 66969121. The reversal of 66969105 is 50196966.

It is not a de Polignac number, because 66969105 - 2² = 66969101 is a prime.

It is a super-2 number, since 2×66969105² = 8969722049002050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66969101) 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 in 31 ways as a sum of consecutive naturals, for example, 3297 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (3879672).

Almost surely, 2^66969105 is an apocalyptic number.

It is an amenable number.

66969105 is a deficient number, since it is larger than the sum of its proper divisors (57180399).

66969105 is a wasteful number, since it uses less digits than its factorization.

66969105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8825.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 66969105 is about 8183.4653417730. The cubic root of 66969105 is about 406.0923718253.

The spelling of 66969105 in words is "sixty-six million, nine hundred sixty-nine thousand, one hundred five".