164840650 has 24 divisors (see below), whose sum is σ = 330189804. Its totient is φ = 60864000.

The previous prime is 164840647. The next prime is 164840657. The reversal of 164840650 is 56048461.

It can be written as a sum of positive squares in 6 ways, for example, as 2099601 + 162741049 = 1449^2 + 12757^2 .

It is not an unprimeable number, because it can be changed into a prime (164840657) by changing a digit.

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, 126151 + ... + 127450.

Almost surely, 2^164840650 is an apocalyptic number.

164840650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164840650 is an abundant number, since it is smaller than the sum of its proper divisors (165349154).

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

164840650 is a wasteful number, since it uses less digits than its factorization.

164840650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253626 (or 253621 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 164840650 is about 12839.0283900301. The cubic root of 164840650 is about 548.3040319233.

The spelling of 164840650 in words is "one hundred sixty-four million, eight hundred forty thousand, six hundred fifty".