166750772 has 12 divisors (see below), whose sum is σ = 298931556. Its totient is φ = 81341760.

The previous prime is 166750757. The next prime is 166750777. The reversal of 166750772 is 277057661.

It can be written as a sum of positive squares in 2 ways, for example, as 83101456 + 83649316 = 9116^2 + 9146^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166750777) 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 3 ways as a sum of consecutive naturals, for example, 508223 + ... + 508550.

It is an arithmetic number, because the mean of its divisors is an integer number (24910963).

Almost surely, 2^166750772 is an apocalyptic number.

It is an amenable number.

166750772 is a deficient number, since it is larger than the sum of its proper divisors (132180784).

166750772 is a wasteful number, since it uses less digits than its factorization.

166750772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016818 (or 1016816 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 166750772 is about 12913.2014620697. The cubic root of 166750772 is about 550.4137624795.

The spelling of 166750772 in words is "one hundred sixty-six million, seven hundred fifty thousand, seven hundred seventy-two".