164221335 has 12 divisors (see below), whose sum is σ = 284650392. Its totient is φ = 87584688.

The previous prime is 164221331. The next prime is 164221339. The reversal of 164221335 is 533122461.

164221335 is a `hidden beast` number, since 1 + 642 + 2 + 13 + 3 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (164221331) and next prime (164221339).

It is not a de Polignac number, because 164221335 - 2² = 164221331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164221299 and 164221308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164221331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1824637 + ... + 1824726.

It is an arithmetic number, because the mean of its divisors is an integer number (23720866).

Almost surely, 2^164221335 is an apocalyptic number.

164221335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164221335 is a deficient number, since it is larger than the sum of its proper divisors (120429057).

164221335 is a wasteful number, since it uses less digits than its factorization.

164221335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649374 (or 3649371 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 164221335 is about 12814.8872410178. The cubic root of 164221335 is about 547.6165011356.

Adding to 164221335 its reverse (533122461), we get a palindrome (697343796).

The spelling of 164221335 in words is "one hundred sixty-four million, two hundred twenty-one thousand, three hundred thirty-five".