166971763 has 12 divisors (see below), whose sum is σ = 200931840. Its totient is φ = 138182352.

The previous prime is 166971751. The next prime is 166971769. The reversal of 166971763 is 367179661.

It is not a de Polignac number, because 166971763 - 2⁵ = 166971731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166971769) 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 11 ways as a sum of consecutive naturals, for example, 57331 + ... + 60172.

It is an arithmetic number, because the mean of its divisors is an integer number (16744320).

Almost surely, 2^166971763 is an apocalyptic number.

166971763 is a deficient number, since it is larger than the sum of its proper divisors (33960077).

166971763 is a wasteful number, since it uses less digits than its factorization.

166971763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117546 (or 117539 counting only the distinct ones).

The product of its digits is 285768, while the sum is 46.

The square root of 166971763 is about 12921.7554148034. The cubic root of 166971763 is about 550.6568054189.

The spelling of 166971763 in words is "one hundred sixty-six million, nine hundred seventy-one thousand, seven hundred sixty-three".