166375061 has 4 divisors (see below), whose sum is σ = 166469952. Its totient is φ = 166280172.

The previous prime is 166375021. The next prime is 166375063. The reversal of 166375061 is 160573661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166375061 - 2⁶ = 166374997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166375063) 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, 44765 + ... + 48338.

It is an arithmetic number, because the mean of its divisors is an integer number (41617488).

Almost surely, 2^166375061 is an apocalyptic number.

It is an amenable number.

166375061 is a deficient number, since it is larger than the sum of its proper divisors (94891).

166375061 is an equidigital number, since it uses as much as digits as its factorization.

166375061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94890.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 166375061 is about 12898.6457041040. The cubic root of 166375061 is about 550.0000672176. Note that the first 4 decimals are identical.

The spelling of 166375061 in words is "one hundred sixty-six million, three hundred seventy-five thousand, sixty-one".