101016661 has 8 divisors (see below), whose sum is σ = 103641048. Its totient is φ = 98400000.

The previous prime is 101016613. The next prime is 101016679. The reversal of 101016661 is 166610101.

It can be written as a sum of positive squares in 4 ways, for example, as 14161 + 101002500 = 119^2 + 10050^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-101016661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101016611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32161 + ... + 35161.

It is an arithmetic number, because the mean of its divisors is an integer number (12955131).

Almost surely, 2^101016661 is an apocalyptic number.

It is an amenable number.

101016661 is a deficient number, since it is larger than the sum of its proper divisors (2624387).

101016661 is an equidigital number, since it uses as much as digits as its factorization.

101016661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 101016661 is about 10050.7045026704. The cubic root of 101016661 is about 465.7265567769.

Adding to 101016661 its reverse (166610101), we get a palindrome (267626762).

It can be divided in two parts, 1010 and 16661, that added together give a palindrome (17671).

The spelling of 101016661 in words is "one hundred one million, sixteen thousand, six hundred sixty-one".