166827763 has 4 divisors (see below), whose sum is σ = 174081168. Its totient is φ = 159574360.

The previous prime is 166827757. The next prime is 166827781. The reversal of 166827763 is 367728661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 367728661 = 1097 ⋅335213.

It is a cyclic number.

It is not a de Polignac number, because 166827763 - 2⁹ = 166827251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166827743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626668 + ... + 3626713.

It is an arithmetic number, because the mean of its divisors is an integer number (43520292).

Almost surely, 2^166827763 is an apocalyptic number.

166827763 is a deficient number, since it is larger than the sum of its proper divisors (7253405).

166827763 is an equidigital number, since it uses as much as digits as its factorization.

166827763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7253404.

The product of its digits is 508032, while the sum is 46.

The square root of 166827763 is about 12916.1822145710. The cubic root of 166827763 is about 550.4984605095.

The spelling of 166827763 in words is "one hundred sixty-six million, eight hundred twenty-seven thousand, seven hundred sixty-three".