66046769 has 2 divisors, whose sum is σ = 66046770. Its totient is φ = 66046768.

The previous prime is 66046733. The next prime is 66046801. The reversal of 66046769 is 96764066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33408400 + 32638369 = 5780^2 + 5713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66046769 is a prime.

It is a super-2 number, since 2×66046769² = 8724351390678722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (66049769) 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 as a sum of consecutive naturals, namely, 33023384 + 33023385.

It is an arithmetic number, because the mean of its divisors is an integer number (33023385).

Almost surely, 2^66046769 is an apocalyptic number.

It is an amenable number.

66046769 is a deficient number, since it is larger than the sum of its proper divisors (1).

66046769 is an equidigital number, since it uses as much as digits as its factorization.

66046769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 66046769 is about 8126.9163278577. The cubic root of 66046769 is about 404.2194364702.

The spelling of 66046769 in words is "sixty-six million, forty-six thousand, seven hundred sixty-nine".