101666266 has 8 divisors (see below), whose sum is σ = 164230164. Its totient is φ = 46922880.

The previous prime is 101666261. The next prime is 101666281. The reversal of 101666266 is 662666101.

It can be written as a sum of positive squares in 2 ways, for example, as 99900025 + 1766241 = 9995^2 + 1329^2 .

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 (101666261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1955095 + ... + 1955146.

Almost surely, 2^101666266 is an apocalyptic number.

101666266 is a deficient number, since it is larger than the sum of its proper divisors (62563898).

101666266 is a wasteful number, since it uses less digits than its factorization.

101666266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910256.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 101666266 is about 10082.9691063694. The cubic root of 101666266 is about 466.7227360068.

The spelling of 101666266 in words is "one hundred one million, six hundred sixty-six thousand, two hundred sixty-six".