1001170665 has 32 divisors (see below), whose sum is σ = 1941667200. Its totient is φ = 485415360.

The previous prime is 1001170627. The next prime is 1001170711. The reversal of 1001170665 is 5660711001.

It is not a de Polignac number, because 1001170665 - 2⁶ = 1001170601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335610 + ... + 338579.

It is an arithmetic number, because the mean of its divisors is an integer number (60677100).

Almost surely, 2^1001170665 is an apocalyptic number.

1001170665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001170665 is a deficient number, since it is larger than the sum of its proper divisors (940496535).

1001170665 is a wasteful number, since it uses less digits than its factorization.

1001170665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674214 (or 674208 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1001170665 is about 31641.2810265324. The cubic root of 1001170665 is about 1000.3900694927.

Adding to 1001170665 its reverse (5660711001), we get a palindrome (6661881666).

The spelling of 1001170665 in words is "one billion, one million, one hundred seventy thousand, six hundred sixty-five".