164643000 has 64 divisors (see below), whose sum is σ = 513695520. Its totient is φ = 43904000.

The previous prime is 164642987. The next prime is 164643013. The reversal of 164643000 is 346461.

164643000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164642987) and next prime (164643013).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 24441 + ... + 30440.

Almost surely, 2^164643000 is an apocalyptic number.

164643000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164643000 is an abundant number, since it is smaller than the sum of its proper divisors (349052520).

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

164643000 is a wasteful number, since it uses less digits than its factorization.

164643000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54905 (or 54891 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 164643000 is about 12831.3288477850. The cubic root of 164643000 is about 548.0847987125.

Adding to 164643000 its reverse (346461), we get a palindrome (164989461).

The spelling of 164643000 in words is "one hundred sixty-four million, six hundred forty-three thousand".