1166660365 has 8 divisors (see below), whose sum is σ = 1507684248. Its totient is φ = 861533760.

The previous prime is 1166660359. The next prime is 1166660381. The reversal of 1166660365 is 5630666611.

It can be written as a sum of positive squares in 4 ways, for example, as 6985449 + 1159674916 = 2643^2 + 34054^2 .

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

It is not a de Polignac number, because 1166660365 - 2⁹ = 1166659853 is a prime.

It is a super-2 number, since 2×1166660365² = 2722192814523866450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 8974246 + ... + 8974375.

It is an arithmetic number, because the mean of its divisors is an integer number (188460531).

Almost surely, 2^1166660365 is an apocalyptic number.

It is an amenable number.

1166660365 is a deficient number, since it is larger than the sum of its proper divisors (341023883).

1166660365 is a wasteful number, since it uses less digits than its factorization.

1166660365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17948639.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1166660365 is about 34156.4103061197. The cubic root of 1166660365 is about 1052.7247041968.

The spelling of 1166660365 in words is "one billion, one hundred sixty-six million, six hundred sixty thousand, three hundred sixty-five".