663077497 has 2 divisors, whose sum is σ = 663077498. Its totient is φ = 663077496.

The previous prime is 663077479. The next prime is 663077521. The reversal of 663077497 is 794770366.

663077497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (663077479) 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., 544942336 + 118135161 = 23344^2 + 10869^2 .

It is a cyclic number.

It is not a de Polignac number, because 663077497 - 2⁷ = 663077369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663077497.

It is not a weakly prime, because it can be changed into another prime (663077797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331538748 + 331538749.

It is an arithmetic number, because the mean of its divisors is an integer number (331538749).

Almost surely, 2^663077497 is an apocalyptic number.

It is an amenable number.

663077497 is a deficient number, since it is larger than the sum of its proper divisors (1).

663077497 is an equidigital number, since it uses as much as digits as its factorization.

663077497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 49.

The square root of 663077497 is about 25750.2912022369. The cubic root of 663077497 is about 872.0099286422.

The spelling of 663077497 in words is "six hundred sixty-three million, seventy-seven thousand, four hundred ninety-seven".