1163965 has 8 divisors (see below), whose sum is σ = 1523808. Its totient is φ = 846480.

The previous prime is 1163947. The next prime is 1163969. The reversal of 1163965 is 5693611.

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

It is not a de Polignac number, because 1163965 - 2¹⁹ = 639677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163969) 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, 10527 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (190476).

2^1163965 is an apocalyptic number.

It is an amenable number.

1163965 is a deficient number, since it is larger than the sum of its proper divisors (359843).

1163965 is a wasteful number, since it uses less digits than its factorization.

1163965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21179.

The product of its digits is 4860, while the sum is 31.

The square root of 1163965 is about 1078.8720962190. The cubic root of 1163965 is about 105.1913366873.

The spelling of 1163965 in words is "one million, one hundred sixty-three thousand, nine hundred sixty-five".