1170105665 has 16 divisors (see below), whose sum is σ = 1502060112. Its totient is φ = 871931904.

The previous prime is 1170105661. The next prime is 1170105679. The reversal of 1170105665 is 5665010711.

It can be written as a sum of positive squares in 8 ways, for example, as 1628176 + 1168477489 = 1276^2 + 34183^2 .

It is not a de Polignac number, because 1170105665 - 2² = 1170105661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1170105661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62714 + ... + 79203.

It is an arithmetic number, because the mean of its divisors is an integer number (93878757).

Almost surely, 2^1170105665 is an apocalyptic number.

It is an amenable number.

1170105665 is a deficient number, since it is larger than the sum of its proper divisors (331954447).

1170105665 is a wasteful number, since it uses less digits than its factorization.

1170105665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142036.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1170105665 is about 34206.8072903625. The cubic root of 1170105665 is about 1053.7599634978.

The spelling of 1170105665 in words is "one billion, one hundred seventy million, one hundred five thousand, six hundred sixty-five".