164250666 has 20 divisors (see below), whose sum is σ = 368043522. Its totient is φ = 54750168.

The previous prime is 164250643. The next prime is 164250673. The reversal of 164250666 is 666052461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 155376225 + 8874441 = 12465^2 + 2979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164250666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 506785 + ... + 507108.

Almost surely, 2^164250666 is an apocalyptic number.

164250666 is an abundant number, since it is smaller than the sum of its proper divisors (203792856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164250666 is a wasteful number, since it uses less digits than its factorization.

164250666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013907 (or 1013898 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 164250666 is about 12816.0316010846. The cubic root of 164250666 is about 547.6491018193.

The spelling of 164250666 in words is "one hundred sixty-four million, two hundred fifty thousand, six hundred sixty-six".