66044999 has 8 divisors (see below), whose sum is σ = 66648960. Its totient is φ = 65443936.

The previous prime is 66044989. The next prime is 66045041. The reversal of 66044999 is 99944066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66044999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82469 + ... + 83265.

It is an arithmetic number, because the mean of its divisors is an integer number (8331120).

Almost surely, 2^66044999 is an apocalyptic number.

66044999 is a deficient number, since it is larger than the sum of its proper divisors (603961).

66044999 is a wasteful number, since it uses less digits than its factorization.

66044999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 66044999 is about 8126.8074297352. The cubic root of 66044999 is about 404.2158255200.

It can be divided in two parts, 66044 and 999, that multiplied together give a palindrome (65977956).

The spelling of 66044999 in words is "sixty-six million, forty-four thousand, nine hundred ninety-nine".