1135666665 has 24 divisors (see below), whose sum is σ = 2249702208. Its totient is φ = 519161760.

The previous prime is 1135666663. The next prime is 1135666717. The reversal of 1135666665 is 5666665311.

1135666665 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1135666665 - 2¹ = 1135666663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1135666665.

It is not an unprimeable number, because it can be changed into a prime (1135666663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1802331 + ... + 1802960.

It is an arithmetic number, because the mean of its divisors is an integer number (93737592).

Almost surely, 2^1135666665 is an apocalyptic number.

1135666665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1135666665 is a deficient number, since it is larger than the sum of its proper divisors (1114035543).

1135666665 is a wasteful number, since it uses less digits than its factorization.

1135666665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605309 (or 3605306 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 1135666665 is about 33699.6537816043. The cubic root of 1135666665 is about 1043.3186227470.

The spelling of 1135666665 in words is "one billion, one hundred thirty-five million, six hundred sixty-six thousand, six hundred sixty-five".