66196896 has 24 divisors (see below), whose sum is σ = 173767104. Its totient is φ = 22065600.

The previous prime is 66196883. The next prime is 66196903. The reversal of 66196896 is 69869166.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344680 + ... + 344871.

It is an arithmetic number, because the mean of its divisors is an integer number (7240296).

Almost surely, 2^66196896 is an apocalyptic number.

It is an amenable number.

66196896 is an abundant number, since it is smaller than the sum of its proper divisors (107570208).

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

66196896 is a wasteful number, since it uses less digits than its factorization.

66196896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689564 (or 689556 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 66196896 is about 8136.1474912885. The cubic root of 66196896 is about 404.5254737979.

The spelling of 66196896 in words is "sixty-six million, one hundred ninety-six thousand, eight hundred ninety-six".