164256668 has 12 divisors (see below), whose sum is σ = 290913000. Its totient is φ = 81138672.

The previous prime is 164256661. The next prime is 164256707. The reversal of 164256668 is 866652461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164256661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247043 + ... + 247706.

It is an arithmetic number, because the mean of its divisors is an integer number (24242750).

Almost surely, 2^164256668 is an apocalyptic number.

It is an amenable number.

164256668 is a deficient number, since it is larger than the sum of its proper divisors (126656332).

164256668 is a wasteful number, since it uses less digits than its factorization.

164256668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494836 (or 494834 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 164256668 is about 12816.2657587926. The cubic root of 164256668 is about 547.6557724161.

The spelling of 164256668 in words is "one hundred sixty-four million, two hundred fifty-six thousand, six hundred sixty-eight".