1163665 has 8 divisors (see below), whose sum is σ = 1404288. Its totient is φ = 925680.

The previous prime is 1163663. The next prime is 1163671. The reversal of 1163665 is 5663611.

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

It is not a de Polignac number, because 1163665 - 2¹ = 1163663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (175536).

2^1163665 is an apocalyptic number.

It is an amenable number.

1163665 is a deficient number, since it is larger than the sum of its proper divisors (240623).

1163665 is a wasteful number, since it uses less digits than its factorization.

1163665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 3240, while the sum is 28.

The square root of 1163665 is about 1078.7330531693. The cubic root of 1163665 is about 105.1822985826.

The spelling of 1163665 in words is "one million, one hundred sixty-three thousand, six hundred sixty-five".