66473648 has 40 divisors (see below), whose sum is σ = 133056960. Its totient is φ = 32155200.

The previous prime is 66473599. The next prime is 66473653. The reversal of 66473648 is 84637466.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66473599 and 66473608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62723 + ... + 63773.

It is an arithmetic number, because the mean of its divisors is an integer number (3326424).

Almost surely, 2^66473648 is an apocalyptic number.

It is an amenable number.

66473648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

66473648 is a wasteful number, since it uses less digits than its factorization.

66473648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1179 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 66473648 is about 8153.1373102628. The cubic root of 66473648 is about 405.0884285901.

The spelling of 66473648 in words is "sixty-six million, four hundred seventy-three thousand, six hundred forty-eight".