66473044 has 18 divisors (see below), whose sum is σ = 127865402. Its totient is φ = 30214800.

The previous prime is 66473023. The next prime is 66473047. The reversal of 66473044 is 44037466.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 213444 = 8140^2 + 462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66473047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68187 + ... + 69154.

Almost surely, 2^66473044 is an apocalyptic number.

It is an amenable number.

66473044 is a deficient number, since it is larger than the sum of its proper divisors (61392358).

66473044 is a wasteful number, since it uses less digits than its factorization.

66473044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137367 (or 137354 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 66473044 is about 8153.1002692227. The cubic root of 66473044 is about 405.0872016671.

The spelling of 66473044 in words is "sixty-six million, four hundred seventy-three thousand, forty-four".