1166720327 has 8 divisors (see below), whose sum is σ = 1231197360. Its totient is φ = 1102550400.

The previous prime is 1166720281. The next prime is 1166720329. The reversal of 1166720327 is 7230276611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166720327 is a prime.

It is a super-2 number, since 2×1166720327² = 2722472642869973858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166720329) 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, 68948 + ... + 84185.

It is an arithmetic number, because the mean of its divisors is an integer number (153899670).

Almost surely, 2^1166720327 is an apocalyptic number.

1166720327 is a deficient number, since it is larger than the sum of its proper divisors (64477033).

1166720327 is a wasteful number, since it uses less digits than its factorization.

1166720327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153553.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1166720327 is about 34157.2880510148. The cubic root of 1166720327 is about 1052.7427392649.

Adding to 1166720327 its reverse (7230276611), we get a palindrome (8396996938).

The spelling of 1166720327 in words is "one billion, one hundred sixty-six million, seven hundred twenty thousand, three hundred twenty-seven".