164321567 has 2 divisors, whose sum is σ = 164321568. Its totient is φ = 164321566.

The previous prime is 164321543. The next prime is 164321579. The reversal of 164321567 is 765123461.

It is a strong prime.

It is an emirp because it is prime and its reverse (765123461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164321567 - 2¹² = 164317471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164351567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82160783 + 82160784.

It is an arithmetic number, because the mean of its divisors is an integer number (82160784).

Almost surely, 2^164321567 is an apocalyptic number.

164321567 is a deficient number, since it is larger than the sum of its proper divisors (1).

164321567 is an equidigital number, since it uses as much as digits as its factorization.

164321567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 164321567 is about 12818.7974084935. The cubic root of 164321567 is about 547.7278905071.

The spelling of 164321567 in words is "one hundred sixty-four million, three hundred twenty-one thousand, five hundred sixty-seven".