1120655665 has 8 divisors (see below), whose sum is σ = 1377586728. Its totient is φ = 874657920.

The previous prime is 1120655659. The next prime is 1120655681. The reversal of 1120655665 is 5665560211.

It can be written as a sum of positive squares in 4 ways, for example, as 112529664 + 1008126001 = 10608^2 + 31751^2 .

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

It is not a de Polignac number, because 1120655665 - 2⁷ = 1120655537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733102 + ... + 2733511.

It is an arithmetic number, because the mean of its divisors is an integer number (172198341).

Almost surely, 2^1120655665 is an apocalyptic number.

It is an amenable number.

1120655665 is a deficient number, since it is larger than the sum of its proper divisors (256931063).

1120655665 is an equidigital number, since it uses as much as digits as its factorization.

1120655665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466659.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1120655665 is about 33476.1954976966. The cubic root of 1120655665 is about 1038.7014318289.

The spelling of 1120655665 in words is "one billion, one hundred twenty million, six hundred fifty-five thousand, six hundred sixty-five".