1147705 has 8 divisors (see below), whose sum is σ = 1483272. Its totient is φ = 847488.

The previous prime is 1147697. The next prime is 1147709. The reversal of 1147705 is 5077411.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 1138489 = 96^2 + 1067^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1147705 - 2³ = 1147697 is a prime.

It is a Duffinian number.

1147705 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147705.

It is not an unprimeable number, because it can be changed into a prime (1147709) 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, 8764 + ... + 8893.

It is an arithmetic number, because the mean of its divisors is an integer number (185409).

2^1147705 is an apocalyptic number.

It is an amenable number.

1147705 is a deficient number, since it is larger than the sum of its proper divisors (335567).

1147705 is a wasteful number, since it uses less digits than its factorization.

1147705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17675.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1147705 is about 1071.3099458140. The cubic root of 1147705 is about 104.6992147728.

The spelling of 1147705 in words is "one million, one hundred forty-seven thousand, seven hundred five".