164024621 has 2 divisors, whose sum is σ = 164024622. Its totient is φ = 164024620.

The previous prime is 164024611. The next prime is 164024629. The reversal of 164024621 is 126420461.

164024621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111302500 + 52722121 = 10550^2 + 7261^2 .

It is a cyclic number.

It is not a de Polignac number, because 164024621 - 2⁶ = 164024557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164024629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82012310 + 82012311.

It is an arithmetic number, because the mean of its divisors is an integer number (82012311).

Almost surely, 2^164024621 is an apocalyptic number.

It is an amenable number.

164024621 is a deficient number, since it is larger than the sum of its proper divisors (1).

164024621 is an equidigital number, since it uses as much as digits as its factorization.

164024621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 164024621 is about 12807.2097273372. The cubic root of 164024621 is about 547.3977579909.

The spelling of 164024621 in words is "one hundred sixty-four million, twenty-four thousand, six hundred twenty-one".