66533008 has 10 divisors (see below), whose sum is σ = 128907734. Its totient is φ = 33266496.

The previous prime is 66532957. The next prime is 66533009. The reversal of 66533008 is 80033566.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 5817744 = 7792^2 + 2412^2 .

It is not an unprimeable number, because it can be changed into a prime (66533009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2079141 + ... + 2079172.

Almost surely, 2^66533008 is an apocalyptic number.

It is an amenable number.

66533008 is a deficient number, since it is larger than the sum of its proper divisors (62374726).

66533008 is a wasteful number, since it uses less digits than its factorization.

66533008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158321 (or 4158315 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66533008 is about 8156.7768144041. The cubic root of 66533008 is about 405.2089720726.

The spelling of 66533008 in words is "sixty-six million, five hundred thirty-three thousand, eight".