1165646 has 8 divisors (see below), whose sum is σ = 1764840. Its totient is φ = 577368.

The previous prime is 1165643. The next prime is 1165667. The reversal of 1165646 is 6465611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456 + ... + 2891.

It is an arithmetic number, because the mean of its divisors is an integer number (220605).

2^1165646 is an apocalyptic number.

1165646 is a deficient number, since it is larger than the sum of its proper divisors (599194).

1165646 is a wasteful number, since it uses less digits than its factorization.

1165646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458.

The product of its digits is 4320, while the sum is 29.

The square root of 1165646 is about 1079.6508694944. The cubic root of 1165646 is about 105.2419514912.

The spelling of 1165646 in words is "one million, one hundred sixty-five thousand, six hundred forty-six".