1145649 has 16 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 730128.

The previous prime is 1145623. The next prime is 1145659. The reversal of 1145649 is 9465411.

It is a happy number.

It is not a de Polignac number, because 1145649 - 2⁸ = 1145393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145659) 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 15 ways as a sum of consecutive naturals, for example, 10654 + ... + 10760.

It is an arithmetic number, because the mean of its divisors is an integer number (99792).

2^1145649 is an apocalyptic number.

It is an amenable number.

1145649 is a deficient number, since it is larger than the sum of its proper divisors (451023).

1145649 is a wasteful number, since it uses less digits than its factorization.

1145649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 4320, while the sum is 30.

The square root of 1145649 is about 1070.3499427757. The cubic root of 1145649 is about 104.6366579736.

The spelling of 1145649 in words is "one million, one hundred forty-five thousand, six hundred forty-nine".