66469345 has 8 divisors (see below), whose sum is σ = 79836840. Its totient is φ = 53126400.

The previous prime is 66469331. The next prime is 66469349. The reversal of 66469345 is 54396466.

It can be written as a sum of positive squares in 4 ways, for example, as 5363856 + 61105489 = 2316^2 + 7817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66469345 - 2⁷ = 66469217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66469349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471 + ... + 11539.

It is an arithmetic number, because the mean of its divisors is an integer number (9979605).

Almost surely, 2^66469345 is an apocalyptic number.

It is an amenable number.

66469345 is a deficient number, since it is larger than the sum of its proper divisors (13367495).

66469345 is a wasteful number, since it uses less digits than its factorization.

66469345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275.

The product of its digits is 466560, while the sum is 43.

The square root of 66469345 is about 8152.8734198441. The cubic root of 66469345 is about 405.0796876169.

The spelling of 66469345 in words is "sixty-six million, four hundred sixty-nine thousand, three hundred forty-five".