66796328 has 8 divisors (see below), whose sum is σ = 125243130. Its totient is φ = 33398160.

The previous prime is 66796321. The next prime is 66796337. The reversal of 66796328 is 82369766.

It can be written as a sum of positive squares in only one way, i.e., 66618244 + 178084 = 8162^2 + 422^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66796321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174763 + ... + 4174778.

Almost surely, 2^66796328 is an apocalyptic number.

It is an amenable number.

66796328 is a deficient number, since it is larger than the sum of its proper divisors (58446802).

66796328 is a wasteful number, since it uses less digits than its factorization.

66796328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349547 (or 8349543 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 66796328 is about 8172.9020549619. The cubic root of 66796328 is about 405.7428382717.

The spelling of 66796328 in words is "sixty-six million, seven hundred ninety-six thousand, three hundred twenty-eight".