1146561 has 8 divisors (see below), whose sum is σ = 1646400. Its totient is φ = 705552.

The previous prime is 1146559. The next prime is 1146569. The reversal of 1146561 is 1656411.

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

It is not a de Polignac number, because 1146561 - 2¹ = 1146559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1146569) 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, 14661 + ... + 14738.

It is an arithmetic number, because the mean of its divisors is an integer number (205800).

2^1146561 is an apocalyptic number.

It is an amenable number.

1146561 is a deficient number, since it is larger than the sum of its proper divisors (499839).

1146561 is a wasteful number, since it uses less digits than its factorization.

1146561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29415.

The product of its digits is 720, while the sum is 24.

The square root of 1146561 is about 1070.7758869157. The cubic root of 1146561 is about 104.6644161326.

The spelling of 1146561 in words is "one million, one hundred forty-six thousand, five hundred sixty-one".