164217650 has 24 divisors (see below), whose sum is σ = 310627440. Its totient is φ = 64572560.

The previous prime is 164217629. The next prime is 164217667. The reversal of 164217650 is 56712461.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24884 + ... + 30783.

It is an arithmetic number, because the mean of its divisors is an integer number (12942810).

Almost surely, 2^164217650 is an apocalyptic number.

164217650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164217650 is a deficient number, since it is larger than the sum of its proper divisors (146409790).

164217650 is a wasteful number, since it uses less digits than its factorization.

164217650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55738 (or 55733 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 164217650 is about 12814.7434621221. The cubic root of 164217650 is about 547.6124050744.

The spelling of 164217650 in words is "one hundred sixty-four million, two hundred seventeen thousand, six hundred fifty".