166777672 has 32 divisors (see below), whose sum is σ = 316910880. Its totient is φ = 82276480.

The previous prime is 166777657. The next prime is 166777679. The reversal of 166777672 is 276777661.

It is not an unprimeable number, because it can be changed into a prime (166777679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243843 + ... + 244525.

It is an arithmetic number, because the mean of its divisors is an integer number (9903465).

Almost surely, 2^166777672 is an apocalyptic number.

It is an amenable number.

166777672 is a deficient number, since it is larger than the sum of its proper divisors (150133208).

166777672 is a wasteful number, since it uses less digits than its factorization.

166777672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1049 counting only the distinct ones).

The product of its digits is 1037232, while the sum is 49.

The square root of 166777672 is about 12914.2429898155. The cubic root of 166777672 is about 550.4433582128.

The spelling of 166777672 in words is "one hundred sixty-six million, seven hundred seventy-seven thousand, six hundred seventy-two".