164642270 has 32 divisors (see below), whose sum is σ = 326585952. Its totient is φ = 59375232.

The previous prime is 164642237. The next prime is 164642281. The reversal of 164642270 is 72246461.

164642270 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9137 + ... + 20316.

It is an arithmetic number, because the mean of its divisors is an integer number (10205811).

Almost surely, 2^164642270 is an apocalyptic number.

164642270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164642270 is a deficient number, since it is larger than the sum of its proper divisors (161943682).

164642270 is a wasteful number, since it uses less digits than its factorization.

164642270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29516.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 164642270 is about 12831.3004017520. The cubic root of 164642270 is about 548.0839886720.

The spelling of 164642270 in words is "one hundred sixty-four million, six hundred forty-two thousand, two hundred seventy".