101665071 has 8 divisors (see below), whose sum is σ = 150614960. Its totient is φ = 67776696.

The previous prime is 101665043. The next prime is 101665073. The reversal of 101665071 is 170566101.

101665071 is a `hidden beast` number, since 1 + 0 + 1 + 6 + 650 + 7 + 1 = 666.

It is not a de Polignac number, because 101665071 - 2¹³ = 101656879 is a prime.

It is a super-2 number, since 2×101665071² = 20671573322870082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3765373 = 101665071 / (1 + 0 + 1 + 6 + 6 + 5 + 0 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101665073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1882660 + ... + 1882713.

It is an arithmetic number, because the mean of its divisors is an integer number (18826870).

Almost surely, 2^101665071 is an apocalyptic number.

101665071 is a deficient number, since it is larger than the sum of its proper divisors (48949889).

101665071 is an equidigital number, since it uses as much as digits as its factorization.

101665071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765382 (or 3765376 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 101665071 is about 10082.9098478564. The cubic root of 101665071 is about 466.7209073575.

The spelling of 101665071 in words is "one hundred one million, six hundred sixty-five thousand, seventy-one".