66182506 has 8 divisors (see below), whose sum is σ = 106910244. Its totient is φ = 30545760.

The previous prime is 66182497. The next prime is 66182507. The reversal of 66182506 is 60528166.

It can be written as a sum of positive squares in 2 ways, for example, as 52925625 + 13256881 = 7275^2 + 3641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66182507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272715 + ... + 1272766.

Almost surely, 2^66182506 is an apocalyptic number.

66182506 is a deficient number, since it is larger than the sum of its proper divisors (40727738).

66182506 is a wasteful number, since it uses less digits than its factorization.

66182506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545496.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 66182506 is about 8135.2631180559. The cubic root of 66182506 is about 404.4961595159.

The spelling of 66182506 in words is "sixty-six million, one hundred eighty-two thousand, five hundred six".