166793401 has 4 divisors (see below), whose sum is σ = 174045312. Its totient is φ = 159541492.

The previous prime is 166793377. The next prime is 166793437. The reversal of 166793401 is 104397661.

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 166793401 - 2¹¹ = 166791353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166793201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3625921 + ... + 3625966.

It is an arithmetic number, because the mean of its divisors is an integer number (43511328).

Almost surely, 2^166793401 is an apocalyptic number.

It is an amenable number.

166793401 is a deficient number, since it is larger than the sum of its proper divisors (7251911).

166793401 is an equidigital number, since it uses as much as digits as its factorization.

166793401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7251910.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 166793401 is about 12914.8519542424. The cubic root of 166793401 is about 550.4606619908.

The spelling of 166793401 in words is "one hundred sixty-six million, seven hundred ninety-three thousand, four hundred one".