66287064 has 16 divisors (see below), whose sum is σ = 165717720. Its totient is φ = 22095680.

The previous prime is 66287051. The next prime is 66287113. The reversal of 66287064 is 46078266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380957 + ... + 1381004.

Almost surely, 2^66287064 is an apocalyptic number.

It is an amenable number.

66287064 is an abundant number, since it is smaller than the sum of its proper divisors (99430656).

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

66287064 is a wasteful number, since it uses less digits than its factorization.

66287064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761970 (or 2761966 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 66287064 is about 8141.6868031140. The cubic root of 66287064 is about 404.7090609771.

The spelling of 66287064 in words is "sixty-six million, two hundred eighty-seven thousand, sixty-four".