66044231 has 4 divisors (see below), whose sum is σ = 72048264. Its totient is φ = 60040200.

The previous prime is 66044221. The next prime is 66044257. The reversal of 66044231 is 13244066.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-66044231 is a prime.

It is a super-2 number, since 2×66044231² = 8723680896762722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66044231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044221) 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, 3002000 + ... + 3002021.

It is an arithmetic number, because the mean of its divisors is an integer number (18012066).

Almost surely, 2^66044231 is an apocalyptic number.

66044231 is a deficient number, since it is larger than the sum of its proper divisors (6004033).

66044231 is a wasteful number, since it uses less digits than its factorization.

66044231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004032.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66044231 is about 8126.7601785705. The cubic root of 66044231 is about 404.2142587147.

Adding to 66044231 its reverse (13244066), we get a palindrome (79288297).

It can be divided in two parts, 6 and 6044231, that multiplied together give a triangular number (36265386 = T₈₅₁₆).

The spelling of 66044231 in words is "sixty-six million, forty-four thousand, two hundred thirty-one".