1100012660 has 12 divisors (see below), whose sum is σ = 2310026628. Its totient is φ = 440005056.

The previous prime is 1100012653. The next prime is 1100012687. The reversal of 1100012660 is 662100011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 253319056 + 846693604 = 15916^2 + 29098^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27500297 + ... + 27500336.

It is an arithmetic number, because the mean of its divisors is an integer number (192502219).

Almost surely, 2^1100012660 is an apocalyptic number.

1100012660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100012660 is an abundant number, since it is smaller than the sum of its proper divisors (1210013968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100012660 is a wasteful number, since it uses less digits than its factorization.

1100012660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55000642 (or 55000640 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1100012660 is about 33166.4387596860. The cubic root of 1100012660 is about 1032.2840756431.

Adding to 1100012660 its reverse (662100011), we get a palindrome (1762112671).

The spelling of 1100012660 in words is "one billion, one hundred million, twelve thousand, six hundred sixty".