1115600660 has 12 divisors (see below), whose sum is σ = 2342761428. Its totient is φ = 446240256.

The previous prime is 1115600659. The next prime is 1115600663. The reversal of 1115600660 is 660065111.

It can be written as a sum of positive squares in 2 ways, for example, as 213919876 + 901680784 = 14626^2 + 30028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115600663) 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, 27889997 + ... + 27890036.

It is an arithmetic number, because the mean of its divisors is an integer number (195230119).

Almost surely, 2^1115600660 is an apocalyptic number.

1115600660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115600660 is an abundant number, since it is smaller than the sum of its proper divisors (1227160768).

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

1115600660 is a wasteful number, since it uses less digits than its factorization.

1115600660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55780042 (or 55780040 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1115600660 is about 33400.6086770885. The cubic root of 1115600660 is about 1037.1373011962.

Adding to 1115600660 its reverse (660065111), we get a palindrome (1775665771).

The spelling of 1115600660 in words is "one billion, one hundred fifteen million, six hundred thousand, six hundred sixty".