106118581 has 8 divisors (see below), whose sum is σ = 107060184. Its totient is φ = 105181440.

The previous prime is 106118563. The next prime is 106118587. The reversal of 106118581 is 185811601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23126481 + 82992100 = 4809^2 + 9110^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 106118581 - 2⁹ = 106118069 is a prime.

It is a super-2 number, since 2×106118581² = 22522306466907122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106118587) 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, 60801 + ... + 62521.

It is an arithmetic number, because the mean of its divisors is an integer number (13382523).

Almost surely, 2^106118581 is an apocalyptic number.

It is an amenable number.

106118581 is a deficient number, since it is larger than the sum of its proper divisors (941603).

106118581 is a wasteful number, since it uses less digits than its factorization.

106118581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 1920, while the sum is 31.

The square root of 106118581 is about 10301.3873337527. The cubic root of 106118581 is about 473.4387610934.

The spelling of 106118581 in words is "one hundred six million, one hundred eighteen thousand, five hundred eighty-one".