66244269 has 32 divisors (see below), whose sum is σ = 109154304. Its totient is φ = 34799040.

The previous prime is 66244267. The next prime is 66244271. The reversal of 66244269 is 96244266.

It is an interprime number because it is at equal distance from previous prime (66244267) and next prime (66244271).

It is not a de Polignac number, because 66244269 - 2¹ = 66244267 is a prime.

It is a super-2 number, since 2×66244269² = 8776606350688722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66244261) 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 31 ways as a sum of consecutive naturals, for example, 117382 + ... + 117944.

It is an arithmetic number, because the mean of its divisors is an integer number (3411072).

Almost surely, 2^66244269 is an apocalyptic number.

It is an amenable number.

66244269 is a deficient number, since it is larger than the sum of its proper divisors (42910035).

66244269 is a wasteful number, since it uses less digits than its factorization.

66244269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017.

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

The square root of 66244269 is about 8139.0582379044. The cubic root of 66244269 is about 404.6219486925.

The spelling of 66244269 in words is "sixty-six million, two hundred forty-four thousand, two hundred sixty-nine".