164766643 has 8 divisors (see below), whose sum is σ = 170635136. Its totient is φ = 158932800.

The previous prime is 164766629. The next prime is 164766671. The reversal of 164766643 is 346667461.

164766643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164766643 - 2⁵ = 164766611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164766643.

It is not an unprimeable number, because it can be changed into a prime (164766683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (21329392).

Almost surely, 2^164766643 is an apocalyptic number.

164766643 is a deficient number, since it is larger than the sum of its proper divisors (5868493).

164766643 is a wasteful number, since it uses less digits than its factorization.

164766643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325.

The product of its digits is 435456, while the sum is 43.

The square root of 164766643 is about 12836.1459558545. The cubic root of 164766643 is about 548.2219639571.

The spelling of 164766643 in words is "one hundred sixty-four million, seven hundred sixty-six thousand, six hundred forty-three".