166329797 has 2 divisors, whose sum is σ = 166329798. Its totient is φ = 166329796.

The previous prime is 166329733. The next prime is 166329803. The reversal of 166329797 is 797923661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163814401 + 2515396 = 12799^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 166329797 - 2⁶ = 166329733 is a prime.

It is a super-2 number, since 2×166329797² = 55331202740122418, 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 (166329197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83164898 + 83164899.

It is an arithmetic number, because the mean of its divisors is an integer number (83164899).

Almost surely, 2^166329797 is an apocalyptic number.

It is an amenable number.

166329797 is a deficient number, since it is larger than the sum of its proper divisors (1).

166329797 is an equidigital number, since it uses as much as digits as its factorization.

166329797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 50.

The square root of 166329797 is about 12896.8909819382. The cubic root of 166329797 is about 549.9501850199.

The spelling of 166329797 in words is "one hundred sixty-six million, three hundred twenty-nine thousand, seven hundred ninety-seven".