66269417 has 12 divisors (see below), whose sum is σ = 73360980. Its totient is φ = 59651328.

The previous prime is 66269377. The next prime is 66269419. The reversal of 66269417 is 71496266.

It can be written as a sum of positive squares in 2 ways, for example, as 56911936 + 9357481 = 7544^2 + 3059^2 .

It is a de Polignac number, because none of the positive numbers 2^k-66269417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66269419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5309 + ... + 12677.

It is an arithmetic number, because the mean of its divisors is an integer number (6113415).

Almost surely, 2^66269417 is an apocalyptic number.

It is an amenable number.

66269417 is a deficient number, since it is larger than the sum of its proper divisors (7091563).

66269417 is a wasteful number, since it uses less digits than its factorization.

66269417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432 (or 7409 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 66269417 is about 8140.6029874942. The cubic root of 66269417 is about 404.6731437899.

The spelling of 66269417 in words is "sixty-six million, two hundred sixty-nine thousand, four hundred seventeen".