100666466 has 4 divisors (see below), whose sum is σ = 150999702. Its totient is φ = 50333232.

The previous prime is 100666463. The next prime is 100666481. The reversal of 100666466 is 664666001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664666001 = 821 ⋅809581.

It can be written as a sum of positive squares in only one way, i.e., 93219025 + 7447441 = 9655^2 + 2729^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100666463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25166615 + ... + 25166618.

Almost surely, 2^100666466 is an apocalyptic number.

100666466 is a deficient number, since it is larger than the sum of its proper divisors (50333236).

100666466 is an equidigital number, since it uses as much as digits as its factorization.

100666466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50333235.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 100666466 is about 10033.2679621348. The cubic root of 100666466 is about 465.1877547571.

The spelling of 100666466 in words is "one hundred million, six hundred sixty-six thousand, four hundred sixty-six".