166344761 has 8 divisors (see below), whose sum is σ = 181561824. Its totient is φ = 151143520.

The previous prime is 166344751. The next prime is 166344811. The reversal of 166344761 is 167443661.

166344761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166344761 - 2²⁶ = 99235897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166344721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33506 + ... + 38148.

It is an arithmetic number, because the mean of its divisors is an integer number (22695228).

Almost surely, 2^166344761 is an apocalyptic number.

166344761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166344761 is a deficient number, since it is larger than the sum of its proper divisors (15217063).

166344761 is a wasteful number, since it uses less digits than its factorization.

166344761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911.

The product of its digits is 72576, while the sum is 38.

The square root of 166344761 is about 12897.4711087096. The cubic root of 166344761 is about 549.9666767689.

The spelling of 166344761 in words is "one hundred sixty-six million, three hundred forty-four thousand, seven hundred sixty-one".