8166997 has 2 divisors, whose sum is σ = 8166998. Its totient is φ = 8166996.

The previous prime is 8166967. The next prime is 8167007. The reversal of 8166997 is 7996618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7322436 + 844561 = 2706^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 8166997 - 2¹⁵ = 8134229 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8166937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4083498 + 4083499.

It is an arithmetic number, because the mean of its divisors is an integer number (4083499).

Almost surely, 2^8166997 is an apocalyptic number.

It is an amenable number.

8166997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8166997 is an equidigital number, since it uses as much as digits as its factorization.

8166997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 8166997 is about 2857.7958289563. The cubic root of 8166997 is about 201.3820690925.

The spelling of 8166997 in words is "eight million, one hundred sixty-six thousand, nine hundred ninety-seven".