166476943 has 4 divisors (see below), whose sum is σ = 168093328. Its totient is φ = 164860560.

The previous prime is 166476923. The next prime is 166476983. The reversal of 166476943 is 349674661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349674661 = 7 ⋅49953523.

It is a cyclic number.

It is not a de Polignac number, because 166476943 - 2¹³ = 166468751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166476893 and 166476902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166476923) 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, 808038 + ... + 808243.

It is an arithmetic number, because the mean of its divisors is an integer number (42023332).

Almost surely, 2^166476943 is an apocalyptic number.

166476943 is a deficient number, since it is larger than the sum of its proper divisors (1616385).

166476943 is a wasteful number, since it uses less digits than its factorization.

166476943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616384.

The product of its digits is 653184, while the sum is 46.

The square root of 166476943 is about 12902.5944290286. The cubic root of 166476943 is about 550.1123109486.

The spelling of 166476943 in words is "one hundred sixty-six million, four hundred seventy-six thousand, nine hundred forty-three".