110040661 has 4 divisors (see below), whose sum is σ = 110061900. Its totient is φ = 110019424.

The previous prime is 110040589. The next prime is 110040673. The reversal of 110040661 is 166040011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166040011 = 131 ⋅1267481.

It can be written as a sum of positive squares in 2 ways, for example, as 85100625 + 24940036 = 9225^2 + 4994^2 .

It is a cyclic number.

It is not a de Polignac number, because 110040661 - 2¹¹ = 110038613 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 (110040061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2835 + ... + 15103.

It is an arithmetic number, because the mean of its divisors is an integer number (27515475).

Almost surely, 2^110040661 is an apocalyptic number.

It is an amenable number.

110040661 is a deficient number, since it is larger than the sum of its proper divisors (21239).

110040661 is an equidigital number, since it uses as much as digits as its factorization.

110040661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21238.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 110040661 is about 10490.0267397181. The cubic root of 110040661 is about 479.2010159858.

Adding to 110040661 its reverse (166040011), we get a palindrome (276080672).

The spelling of 110040661 in words is "one hundred ten million, forty thousand, six hundred sixty-one".