166196877 has 32 divisors (see below), whose sum is σ = 281932800. Its totient is φ = 86330160.

The previous prime is 166196869. The next prime is 166196881. The reversal of 166196877 is 778691661.

It is not a de Polignac number, because 166196877 - 2³ = 166196869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166196887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3978 + ... + 18660.

It is an arithmetic number, because the mean of its divisors is an integer number (8810400).

Almost surely, 2^166196877 is an apocalyptic number.

It is an amenable number.

166196877 is a deficient number, since it is larger than the sum of its proper divisors (115735923).

166196877 is a wasteful number, since it uses less digits than its factorization.

166196877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14718 (or 14704 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 166196877 is about 12891.7367720567. The cubic root of 166196877 is about 549.8036511243.

The spelling of 166196877 in words is "one hundred sixty-six million, one hundred ninety-six thousand, eight hundred seventy-seven".