166067541 has 6 divisors (see below), whose sum is σ = 239875350. Its totient is φ = 110711688.

The previous prime is 166067537. The next prime is 166067569. The reversal of 166067541 is 145760661.

166067541 is a `hidden beast` number, since 1 + 6 + 606 + 7 + 5 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162027441 + 4040100 = 12729^2 + 2010^2 .

It is not a de Polignac number, because 166067541 - 2² = 166067537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166067496 and 166067505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166067641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9225966 + ... + 9225983.

It is an arithmetic number, because the mean of its divisors is an integer number (39979225).

Almost surely, 2^166067541 is an apocalyptic number.

It is an amenable number.

166067541 is a deficient number, since it is larger than the sum of its proper divisors (73807809).

166067541 is a wasteful number, since it uses less digits than its factorization.

166067541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451955 (or 18451952 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 166067541 is about 12886.7195592982. The cubic root of 166067541 is about 549.6609932912.

The spelling of 166067541 in words is "one hundred sixty-six million, sixty-seven thousand, five hundred forty-one".