66896616 has 32 divisors (see below), whose sum is σ = 169536960. Its totient is φ = 21992832.

The previous prime is 66896603. The next prime is 66896617. The reversal of 66896616 is 61669866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66896617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17340 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (5298030).

Almost surely, 2^66896616 is an apocalyptic number.

It is an amenable number.

66896616 is an abundant number, since it is smaller than the sum of its proper divisors (102640344).

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

66896616 is a wasteful number, since it uses less digits than its factorization.

66896616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38265 (or 38261 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 66896616 is about 8179.0351509209. The cubic root of 66896616 is about 405.9457974831.

The spelling of 66896616 in words is "sixty-six million, eight hundred ninety-six thousand, six hundred sixteen".