164897867 has 2 divisors, whose sum is σ = 164897868. Its totient is φ = 164897866.

The previous prime is 164897851. The next prime is 164897881. The reversal of 164897867 is 768798461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164897867 - 2⁴ = 164897851 is a prime.

It is a super-2 number, since 2×164897867² = 54382613082299378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164497867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82448933 + 82448934.

It is an arithmetic number, because the mean of its divisors is an integer number (82448934).

Almost surely, 2^164897867 is an apocalyptic number.

164897867 is a deficient number, since it is larger than the sum of its proper divisors (1).

164897867 is an equidigital number, since it uses as much as digits as its factorization.

164897867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 164897867 is about 12841.2564416415. The cubic root of 164897867 is about 548.3674642597.

The spelling of 164897867 in words is "one hundred sixty-four million, eight hundred ninety-seven thousand, eight hundred sixty-seven".