66453560 has 32 divisors (see below), whose sum is σ = 149806800. Its totient is φ = 26530560.

The previous prime is 66453559. The next prime is 66453577. The reversal of 66453560 is 6535466.

It is a self number, because there is not a number n which added to its sum of digits gives 66453560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25100 + ... + 27620.

Almost surely, 2^66453560 is an apocalyptic number.

It is an amenable number.

66453560 is an abundant number, since it is smaller than the sum of its proper divisors (83353240).

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

66453560 is a wasteful number, since it uses less digits than its factorization.

66453560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191 (or 3187 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 66453560 is about 8151.9052987630. The cubic root of 66453560 is about 405.0476192547.

The spelling of 66453560 in words is "sixty-six million, four hundred fifty-three thousand, five hundred sixty".