806997167497 has 2 divisors, whose sum is σ = 806997167498. Its totient is φ = 806997167496.

The previous prime is 806997167461. The next prime is 806997167531. The reversal of 806997167497 is 794761799608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803059730496 + 3937437001 = 896136^2 + 62749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806997167497 is a prime.

It is not a weakly prime, because it can be changed into another prime (806997162497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403498583748 + 403498583749.

It is an arithmetic number, because the mean of its divisors is an integer number (403498583749).

Almost surely, 2^806997167497 is an apocalyptic number.

It is an amenable number.

806997167497 is a deficient number, since it is larger than the sum of its proper divisors (1).

806997167497 is an equidigital number, since it uses as much as digits as its factorization.

806997167497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288054144, while the sum is 73.

The spelling of 806997167497 in words is "eight hundred six billion, nine hundred ninety-seven million, one hundred sixty-seven thousand, four hundred ninety-seven".