164897855 has 16 divisors (see below), whose sum is σ = 204954624. Its totient is φ = 127280160.

The previous prime is 164897851. The next prime is 164897867. The reversal of 164897855 is 558798461.

164897855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164897855 - 2² = 164897851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164897797 and 164897806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164897851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11744 + ... + 21626.

It is an arithmetic number, because the mean of its divisors is an integer number (12809664).

Almost surely, 2^164897855 is an apocalyptic number.

164897855 is a deficient number, since it is larger than the sum of its proper divisors (40056769).

164897855 is an equidigital number, since it uses as much as digits as its factorization.

164897855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006.

The product of its digits is 2419200, while the sum is 53.

The square root of 164897855 is about 12841.2559743975. The cubic root of 164897855 is about 548.3674509577.

The spelling of 164897855 in words is "one hundred sixty-four million, eight hundred ninety-seven thousand, eight hundred fifty-five".