66650896 has 45 divisors (see below), whose sum is σ = 140730111. Its totient is φ = 30566016.

The previous prime is 66650873. The next prime is 66650921. The reversal of 66650896 is 69805666.

The square root of 66650896 is 8164.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 21492496 + 45158400 = 4636^2 + 6720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 424450 + ... + 424606.

Almost surely, 2^66650896 is an apocalyptic number.

66650896 is the 8164-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66650896

66650896 is an abundant number, since it is smaller than the sum of its proper divisors (74079215).

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

66650896 is a wasteful number, since it uses less digits than its factorization.

66650896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The cubic root of 66650896 is about 405.4481570566.

The spelling of 66650896 in words is "sixty-six million, six hundred fifty thousand, eight hundred ninety-six".