66000469 has 2 divisors, whose sum is σ = 66000470. Its totient is φ = 66000468.

The previous prime is 66000421. The next prime is 66000479. The reversal of 66000469 is 96400066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55696369 + 10304100 = 7463^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 66000469 - 2¹⁹ = 65476181 is a prime.

It is a super-2 number, since 2×66000469² = 8712123816439922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66000469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66000419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000234 + 33000235.

It is an arithmetic number, because the mean of its divisors is an integer number (33000235).

Almost surely, 2^66000469 is an apocalyptic number.

It is an amenable number.

66000469 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000469 is an equidigital number, since it uses as much as digits as its factorization.

66000469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 66000469 is about 8124.0672695393. The cubic root of 66000469 is about 404.1249593032.

The spelling of 66000469 in words is "sixty-six million, four hundred sixty-nine", and thus it is an aban number.