101660885 has 4 divisors (see below), whose sum is σ = 121993068. Its totient is φ = 81328704.

The previous prime is 101660879. The next prime is 101660891. The reversal of 101660885 is 588066101.

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

It is an interprime number because it is at equal distance from previous prime (101660879) and next prime (101660891).

It can be written as a sum of positive squares in 2 ways, for example, as 35450116 + 66210769 = 5954^2 + 8137^2 .

It is a cyclic number.

It is not a de Polignac number, because 101660885 - 2⁴ = 101660869 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 3 ways as a sum of consecutive naturals, for example, 10166084 + ... + 10166093.

It is an arithmetic number, because the mean of its divisors is an integer number (30498267).

Almost surely, 2^101660885 is an apocalyptic number.

It is an amenable number.

101660885 is a deficient number, since it is larger than the sum of its proper divisors (20332183).

101660885 is an equidigital number, since it uses as much as digits as its factorization.

101660885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20332182.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 101660885 is about 10082.7022667537. The cubic root of 101660885 is about 466.7145016159.

The spelling of 101660885 in words is "one hundred one million, six hundred sixty thousand, eight hundred eighty-five".