66469441 has 4 divisors (see below), whose sum is σ = 66488752. Its totient is φ = 66450132.

The previous prime is 66469433. The next prime is 66469451. The reversal of 66469441 is 14496466.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14496466 = 2 ⋅7248233.

It is a cyclic number.

It is not a de Polignac number, because 66469441 - 2³ = 66469433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66469394 and 66469403.

It is not an unprimeable number, because it can be changed into a prime (66469411) 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, 2931 + ... + 11896.

It is an arithmetic number, because the mean of its divisors is an integer number (16622188).

Almost surely, 2^66469441 is an apocalyptic number.

It is an amenable number.

66469441 is a deficient number, since it is larger than the sum of its proper divisors (19311).

66469441 is a wasteful number, since it uses less digits than its factorization.

66469441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19310.

The product of its digits is 124416, while the sum is 40.

The square root of 66469441 is about 8152.8793073368. The cubic root of 66469441 is about 405.0798826323.

The spelling of 66469441 in words is "sixty-six million, four hundred sixty-nine thousand, four hundred forty-one".