164517797 has 2 divisors, whose sum is σ = 164517798. Its totient is φ = 164517796.

The previous prime is 164517767. The next prime is 164517803. The reversal of 164517797 is 797715461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151019521 + 13498276 = 12289^2 + 3674^2 .

It is a cyclic number.

It is not a de Polignac number, because 164517797 - 2⁸ = 164517541 is a prime.

It is a super-2 number, since 2×164517797² = 54132211059466418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164517757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82258898 + 82258899.

It is an arithmetic number, because the mean of its divisors is an integer number (82258899).

Almost surely, 2^164517797 is an apocalyptic number.

It is an amenable number.

164517797 is a deficient number, since it is larger than the sum of its proper divisors (1).

164517797 is an equidigital number, since it uses as much as digits as its factorization.

164517797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 47.

The square root of 164517797 is about 12826.4491189105. The cubic root of 164517797 is about 547.9458328633.

The spelling of 164517797 in words is "one hundred sixty-four million, five hundred seventeen thousand, seven hundred ninety-seven".