100706666 has 4 divisors (see below), whose sum is σ = 151060002. Its totient is φ = 50353332.

The previous prime is 100706651. The next prime is 100706677. The reversal of 100706666 is 666607001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 100420441 + 286225 = 10021^2 + 535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25176665 + ... + 25176668.

Almost surely, 2^100706666 is an apocalyptic number.

100706666 is a deficient number, since it is larger than the sum of its proper divisors (50353336).

100706666 is an equidigital number, since it uses as much as digits as its factorization.

100706666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50353335.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 100706666 is about 10035.2710974841. The cubic root of 100706666 is about 465.2496689832.

The spelling of 100706666 in words is "one hundred million, seven hundred six thousand, six hundred sixty-six".