166277140 has 24 divisors (see below), whose sum is σ = 357700392. Its totient is φ = 64888320.

The previous prime is 166277131. The next prime is 166277141. The reversal of 166277140 is 41772661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21904 + 166255236 = 148^2 + 12894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166277096 and 166277105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166277141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100569 + ... + 102208.

It is an arithmetic number, because the mean of its divisors is an integer number (14904183).

Almost surely, 2^166277140 is an apocalyptic number.

166277140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166277140 is an abundant number, since it is smaller than the sum of its proper divisors (191423252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166277140 is a wasteful number, since it uses less digits than its factorization.

166277140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202827 (or 202825 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 166277140 is about 12894.8493593372. The cubic root of 166277140 is about 549.8921441399.

The spelling of 166277140 in words is "one hundred sixty-six million, two hundred seventy-seven thousand, one hundred forty".