1170555665 has 8 divisors (see below), whose sum is σ = 1405774440. Its totient is φ = 935706112.

The previous prime is 1170555653. The next prime is 1170555671. The reversal of 1170555665 is 5665550711.

It can be written as a sum of positive squares in 4 ways, for example, as 454243969 + 716311696 = 21313^2 + 26764^2 .

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 1170555665 - 2⁸ = 1170555409 is a prime.

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, 85280 + ... + 98049.

It is an arithmetic number, because the mean of its divisors is an integer number (175721805).

Almost surely, 2^1170555665 is an apocalyptic number.

It is an amenable number.

1170555665 is a deficient number, since it is larger than the sum of its proper divisors (235218775).

1170555665 is a wasteful number, since it uses less digits than its factorization.

1170555665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184611.

The product of its (nonzero) digits is 157500, while the sum is 41.

The square root of 1170555665 is about 34213.3842962078. The cubic root of 1170555665 is about 1053.8950314158.

The spelling of 1170555665 in words is "one billion, one hundred seventy million, five hundred fifty-five thousand, six hundred sixty-five".