166765272 has 32 divisors (see below), whose sum is σ = 435041280. Its totient is φ = 53171360.

The previous prime is 166765271. The next prime is 166765273. The reversal of 166765272 is 272567661.

It is an interprime number because it is at equal distance from previous prime (166765271) and next prime (166765273).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166765271) 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, 150504 + ... + 151607.

It is an arithmetic number, because the mean of its divisors is an integer number (13595040).

Almost surely, 2^166765272 is an apocalyptic number.

166765272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166765272 is an abundant number, since it is smaller than the sum of its proper divisors (268276008).

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

166765272 is a wasteful number, since it uses less digits than its factorization.

166765272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302143 (or 302139 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 166765272 is about 12913.7628908076. The cubic root of 166765272 is about 550.4297159654.

The spelling of 166765272 in words is "one hundred sixty-six million, seven hundred sixty-five thousand, two hundred seventy-two".