166078197 has 12 divisors (see below), whose sum is σ = 240084000. Its totient is φ = 110629608.

The previous prime is 166078123. The next prime is 166078207. The reversal of 166078197 is 791870661.

It is not a de Polignac number, because 166078197 - 2¹² = 166074101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166078597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5554 + ... + 19052.

It is an arithmetic number, because the mean of its divisors is an integer number (20007000).

Almost surely, 2^166078197 is an apocalyptic number.

It is an amenable number.

166078197 is a deficient number, since it is larger than the sum of its proper divisors (74005803).

166078197 is a wasteful number, since it uses less digits than its factorization.

166078197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14872 (or 14869 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 166078197 is about 12887.1330015640. The cubic root of 166078197 is about 549.6727496771.

The spelling of 166078197 in words is "one hundred sixty-six million, seventy-eight thousand, one hundred ninety-seven".