166766850 has 60 divisors (see below), whose sum is σ = 463376034. Its totient is φ = 44470080.

The previous prime is 166766833. The next prime is 166766851. The reversal of 166766850 is 58667661.

It can be written as a sum of positive squares in 3 ways, for example, as 103612041 + 63154809 = 10179^2 + 7947^2 .

It is a super-2 number, since 2×166766850² = 55622364517845000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166766796 and 166766805.

It is not an unprimeable number, because it can be changed into a prime (166766851) 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 29 ways as a sum of consecutive naturals, for example, 16539 + ... + 24638.

Almost surely, 2^166766850 is an apocalyptic number.

166766850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166766850 is an abundant number, since it is smaller than the sum of its proper divisors (296609184).

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

166766850 is a wasteful number, since it uses less digits than its factorization.

166766850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201 (or 41187 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 166766850 is about 12913.8239882693. The cubic root of 166766850 is about 550.4314520889.

The spelling of 166766850 in words is "one hundred sixty-six million, seven hundred sixty-six thousand, eight hundred fifty".