166346753 has 4 divisors (see below), whose sum is σ = 167872980. Its totient is φ = 164820528.

The previous prime is 166346743. The next prime is 166346797. The reversal of 166346753 is 357643661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 357643661 = 1231 ⋅290531.

It can be written as a sum of positive squares in 2 ways, for example, as 38588944 + 127757809 = 6212^2 + 11303^2 .

It is a cyclic number.

It is not a de Polignac number, because 166346753 - 2⁴ = 166346737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166346753.

It is not an unprimeable number, because it can be changed into a prime (166346723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762950 + ... + 763167.

It is an arithmetic number, because the mean of its divisors is an integer number (41968245).

It is a Proth number, since it is equal to 10153 ⋅ 2¹⁴ + 1 and 10153 < 2¹⁴.

Almost surely, 2^166346753 is an apocalyptic number.

It is an amenable number.

166346753 is a deficient number, since it is larger than the sum of its proper divisors (1526227).

166346753 is a wasteful number, since it uses less digits than its factorization.

166346753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526226.

The product of its digits is 272160, while the sum is 41.

The square root of 166346753 is about 12897.5483329197. The cubic root of 166346753 is about 549.9688720675.

The spelling of 166346753 in words is "one hundred sixty-six million, three hundred forty-six thousand, seven hundred fifty-three".