66044988 has 36 divisors (see below), whose sum is σ = 175735560. Its totient is φ = 20856096.

The previous prime is 66044987. The next prime is 66044989. The reversal of 66044988 is 88944066.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66044987) and next prime (66044989).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66044987) 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, 47595 + ... + 48962.

Almost surely, 2^66044988 is an apocalyptic number.

It is an amenable number.

66044988 is an abundant number, since it is smaller than the sum of its proper divisors (109690572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66044988 is a wasteful number, since it uses less digits than its factorization.

66044988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96586 (or 96581 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 66044988 is about 8126.8067529627. The cubic root of 66044988 is about 404.2158030788.

The spelling of 66044988 in words is "sixty-six million, forty-four thousand, nine hundred eighty-eight".