101666575 has 12 divisors (see below), whose sum is σ = 126203728. Its totient is φ = 81244800.

The previous prime is 101666563. The next prime is 101666603. The reversal of 101666575 is 575666101.

It is a de Polignac number, because none of the positive numbers 2^k-101666575 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31015 + ... + 34135.

Almost surely, 2^101666575 is an apocalyptic number.

101666575 is a deficient number, since it is larger than the sum of its proper divisors (24537153).

101666575 is a wasteful number, since it uses less digits than its factorization.

101666575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 101666575 is about 10082.9844292253. The cubic root of 101666575 is about 466.7232088519.

The spelling of 101666575 in words is "one hundred one million, six hundred sixty-six thousand, five hundred seventy-five".