101666433 has 16 divisors (see below), whose sum is σ = 148704192. Its totient is φ = 61272000.

The previous prime is 101666419. The next prime is 101666441. The reversal of 101666433 is 334666101.

It is not a de Polignac number, because 101666433 - 2⁵ = 101666401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101666433.

It is not an unprimeable number, because it can be changed into a prime (101666483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2538 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (9294012).

Almost surely, 2^101666433 is an apocalyptic number.

It is an amenable number.

101666433 is a deficient number, since it is larger than the sum of its proper divisors (47037759).

101666433 is a wasteful number, since it uses less digits than its factorization.

101666433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17216.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 101666433 is about 10082.9773876569. The cubic root of 101666433 is about 466.7229915575.

The spelling of 101666433 in words is "one hundred one million, six hundred sixty-six thousand, four hundred thirty-three".