80005897 has 2 divisors, whose sum is σ = 80005898. Its totient is φ = 80005896.

The previous prime is 80005879. The next prime is 80005931. The reversal of 80005897 is 79850008.

Together with previous prime (80005879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 24890121 = 7424^2 + 4989^2 .

It is a cyclic number.

It is not a de Polignac number, because 80005897 - 2⁷ = 80005769 is a prime.

It is a super-3 number, since 3×80005897³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (80005847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40002948 + 40002949.

It is an arithmetic number, because the mean of its divisors is an integer number (40002949).

Almost surely, 2^80005897 is an apocalyptic number.

It is an amenable number.

80005897 is a deficient number, since it is larger than the sum of its proper divisors (1).

80005897 is an equidigital number, since it uses as much as digits as its factorization.

80005897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 80005897 is about 8944.6015562461. The cubic root of 80005897 is about 430.8975249974.

The spelling of 80005897 in words is "eighty million, five thousand, eight hundred ninety-seven".