1140665 has 8 divisors (see below), whose sum is σ = 1440960. Its totient is φ = 864432.

The previous prime is 1140637. The next prime is 1140677. The reversal of 1140665 is 5660411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140665 is a prime.

It is a super-2 number, since 2×1140665² = 2602233284450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1140665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5909 + ... + 6098.

It is an arithmetic number, because the mean of its divisors is an integer number (180120).

2^1140665 is an apocalyptic number.

It is an amenable number.

1140665 is a deficient number, since it is larger than the sum of its proper divisors (300295).

1140665 is a wasteful number, since it uses less digits than its factorization.

1140665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12031.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1140665 is about 1068.0191945841. The cubic root of 1140665 is about 104.4847012547.

The spelling of 1140665 in words is "one million, one hundred forty thousand, six hundred sixty-five".