164377321 has 2 divisors, whose sum is σ = 164377322. Its totient is φ = 164377320.

The previous prime is 164377313. The next prime is 164377351. The reversal of 164377321 is 123773461.

164377321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153487321 + 10890000 = 12389^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 164377321 - 2³ = 164377313 is a prime.

It is not a weakly prime, because it can be changed into another prime (164377351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82188660 + 82188661.

It is an arithmetic number, because the mean of its divisors is an integer number (82188661).

Almost surely, 2^164377321 is an apocalyptic number.

It is an amenable number.

164377321 is a deficient number, since it is larger than the sum of its proper divisors (1).

164377321 is an equidigital number, since it uses as much as digits as its factorization.

164377321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 164377321 is about 12820.9719210363. The cubic root of 164377321 is about 547.7898311847.

The spelling of 164377321 in words is "one hundred sixty-four million, three hundred seventy-seven thousand, three hundred twenty-one".