1133005665 has 64 divisors (see below), whose sum is σ = 2013972480. Its totient is φ = 539343360.

The previous prime is 1133005661. The next prime is 1133005723. The reversal of 1133005665 is 5665003311.

It is not a de Polignac number, because 1133005665 - 2² = 1133005661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1133005661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2769981 + ... + 2770389.

It is an arithmetic number, because the mean of its divisors is an integer number (31468320).

Almost surely, 2^1133005665 is an apocalyptic number.

1133005665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1133005665 is a deficient number, since it is larger than the sum of its proper divisors (880966815).

1133005665 is a wasteful number, since it uses less digits than its factorization.

1133005665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 1133005665 is about 33660.1495094719. The cubic root of 1133005665 is about 1042.5031128961.

Adding to 1133005665 its reverse (5665003311), we get a palindrome (6798008976).

The spelling of 1133005665 in words is "one billion, one hundred thirty-three million, five thousand, six hundred sixty-five".