1001065 has 8 divisors (see below), whose sum is σ = 1293768. Its totient is φ = 739200.

The previous prime is 1001041. The next prime is 1001069. The reversal of 1001065 is 5601001.

1001065 = T₁₄₂ + T₁₄₃ + ... + T₂₀₆.

It can be written as a sum of positive squares in 4 ways, for example, as 212521 + 788544 = 461^2 + 888^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1001065 is a prime.

It is a super-2 number, since 2×1001065² = 2004262268450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7636 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (161721).

2^1001065 is an apocalyptic number.

It is an amenable number.

1001065 is a deficient number, since it is larger than the sum of its proper divisors (292703).

1001065 is a wasteful number, since it uses less digits than its factorization.

1001065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1001065 is about 1000.5323582973. The cubic root of 1001065 is about 100.0354874050.

Adding to 1001065 its reverse (5601001), we get a palindrome (6602066).

The spelling of 1001065 in words is "one million, one thousand, sixty-five".