166426797 has 8 divisors (see below), whose sum is σ = 221965920. Its totient is φ = 110919440.

The previous prime is 166426763. The next prime is 166426801. The reversal of 166426797 is 797624661.

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

It is a cyclic number.

It is not a de Polignac number, because 166426797 - 2¹⁰ = 166425773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166427797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10222 + ... + 20912.

It is an arithmetic number, because the mean of its divisors is an integer number (27745740).

Almost surely, 2^166426797 is an apocalyptic number.

It is an amenable number.

166426797 is a deficient number, since it is larger than the sum of its proper divisors (55539123).

166426797 is a wasteful number, since it uses less digits than its factorization.

166426797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15883.

The product of its digits is 762048, while the sum is 48.

The square root of 166426797 is about 12900.6510300837. The cubic root of 166426797 is about 550.0570706619.

The spelling of 166426797 in words is "one hundred sixty-six million, four hundred twenty-six thousand, seven hundred ninety-seven".