66896064 has 56 divisors (see below), whose sum is σ = 196667120. Its totient is φ = 22298112.

The previous prime is 66896033. The next prime is 66896143. The reversal of 66896064 is 46069866.

It is a zygodrome in base 2.

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, 17629 + ... + 21084.

Almost surely, 2^66896064 is an apocalyptic number.

66896064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66896064 is an abundant number, since it is smaller than the sum of its proper divisors (129771056).

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

66896064 is a wasteful number, since it uses less digits than its factorization.

66896064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38734 (or 38718 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 66896064 is about 8179.0014060397. The cubic root of 66896064 is about 405.9446809209.

The spelling of 66896064 in words is "sixty-six million, eight hundred ninety-six thousand, sixty-four".