66485456 has 20 divisors (see below), whose sum is σ = 134416992. Its totient is φ = 31797216.

The previous prime is 66485437. The next prime is 66485459. The reversal of 66485456 is 65458466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66485459) 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, 89966 + ... + 90701.

Almost surely, 2^66485456 is an apocalyptic number.

It is an amenable number.

66485456 is an abundant number, since it is smaller than the sum of its proper divisors (67931536).

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

66485456 is a wasteful number, since it uses less digits than its factorization.

66485456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180698 (or 180692 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 66485456 is about 8153.8614165314. The cubic root of 66485456 is about 405.1124130366.

The spelling of 66485456 in words is "sixty-six million, four hundred eighty-five thousand, four hundred fifty-six".