80784497 has 2 divisors, whose sum is σ = 80784498. Its totient is φ = 80784496.

The previous prime is 80784479. The next prime is 80784503. The reversal of 80784497 is 79448708.

Together with previous prime (80784479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67831696 + 12952801 = 8236^2 + 3599^2 .

It is a cyclic number.

It is not a de Polignac number, because 80784497 - 2⁸ = 80784241 is a prime.

It is a super-2 number, since 2×80784497² = 13052269911086018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80784467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40392248 + 40392249.

It is an arithmetic number, because the mean of its divisors is an integer number (40392249).

Almost surely, 2^80784497 is an apocalyptic number.

It is an amenable number.

80784497 is a deficient number, since it is larger than the sum of its proper divisors (1).

80784497 is an equidigital number, since it uses as much as digits as its factorization.

80784497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 80784497 is about 8988.0196372727. The cubic root of 80784497 is about 432.2908153436.

The spelling of 80784497 in words is "eighty million, seven hundred eighty-four thousand, four hundred ninety-seven".