166083677 has 4 divisors (see below), whose sum is σ = 166261116. Its totient is φ = 165906240.

The previous prime is 166083653. The next prime is 166083683. The reversal of 166083677 is 776380661.

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: 776380661 = 7 ⋅110911523.

It can be written as a sum of positive squares in 2 ways, for example, as 118831801 + 47251876 = 10901^2 + 6874^2 .

It is a cyclic number.

It is not a de Polignac number, because 166083677 - 2¹⁸ = 165821533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166083637) 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, 87308 + ... + 89189.

It is an arithmetic number, because the mean of its divisors is an integer number (41565279).

Almost surely, 2^166083677 is an apocalyptic number.

It is an amenable number.

166083677 is a deficient number, since it is larger than the sum of its proper divisors (177439).

166083677 is an equidigital number, since it uses as much as digits as its factorization.

166083677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177438.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 166083677 is about 12887.3456149822. The cubic root of 166083677 is about 549.6787953704.

The spelling of 166083677 in words is "one hundred sixty-six million, eighty-three thousand, six hundred seventy-seven".