66044469 has 4 divisors (see below), whose sum is σ = 88059296. Its totient is φ = 44029644.

The previous prime is 66044467. The next prime is 66044479. The reversal of 66044469 is 96444066.

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 not a de Polignac number, because 66044469 - 2¹ = 66044467 is a prime.

It is a super-2 number, since 2×66044469² = 8723743770983922, 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 (66044467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11007409 + ... + 11007414.

It is an arithmetic number, because the mean of its divisors is an integer number (22014824).

Almost surely, 2^66044469 is an apocalyptic number.

It is an amenable number.

66044469 is a deficient number, since it is larger than the sum of its proper divisors (22014827).

66044469 is a wasteful number, since it uses less digits than its factorization.

66044469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22014826.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 66044469 is about 8126.7748215390. The cubic root of 66044469 is about 404.2147442624.

The spelling of 66044469 in words is "sixty-six million, forty-four thousand, four hundred sixty-nine".