66486469 has 4 divisors (see below), whose sum is σ = 75984544. Its totient is φ = 56988396.

The previous prime is 66486467. The next prime is 66486481. The reversal of 66486469 is 96468466.

66486469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66486469 - 2¹ = 66486467 is a prime.

It is a super-2 number, since 2×66486469² = 8840901120175922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66486463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4749027 + ... + 4749040.

It is an arithmetic number, because the mean of its divisors is an integer number (18996136).

Almost surely, 2^66486469 is an apocalyptic number.

It is an amenable number.

66486469 is a deficient number, since it is larger than the sum of its proper divisors (9498075).

66486469 is an equidigital number, since it uses as much as digits as its factorization.

66486469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498074.

The product of its digits is 1492992, while the sum is 49.

The square root of 66486469 is about 8153.9235341031. The cubic root of 66486469 is about 405.1144705131.

The spelling of 66486469 in words is "sixty-six million, four hundred eighty-six thousand, four hundred sixty-nine".