66466369 has 4 divisors (see below), whose sum is σ = 66494596. Its totient is φ = 66438144.

The previous prime is 66466333. The next prime is 66466409. The reversal of 66466369 is 96366466.

66466369 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.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 34656769 = 5640^2 + 5887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66466369 is a prime.

It is a super-2 number, since 2×66466369² = 8835556416088322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66466669) 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, 10224 + ... + 15409.

It is an arithmetic number, because the mean of its divisors is an integer number (16623649).

Almost surely, 2^66466369 is an apocalyptic number.

It is an amenable number.

66466369 is a deficient number, since it is larger than the sum of its proper divisors (28227).

66466369 is a wasteful number, since it uses less digits than its factorization.

66466369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28226.

The product of its digits is 839808, while the sum is 46.

The square root of 66466369 is about 8152.6909054618. The cubic root of 66466369 is about 405.0736420474.

The spelling of 66466369 in words is "sixty-six million, four hundred sixty-six thousand, three hundred sixty-nine".