660348497 has 2 divisors, whose sum is σ = 660348498. Its totient is φ = 660348496.

The previous prime is 660348443. The next prime is 660348503. The reversal of 660348497 is 794843066.

660348497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656948161 + 3400336 = 25631^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 660348497 - 2²² = 656154193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (660348407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330174248 + 330174249.

It is an arithmetic number, because the mean of its divisors is an integer number (330174249).

Almost surely, 2^660348497 is an apocalyptic number.

It is an amenable number.

660348497 is a deficient number, since it is larger than the sum of its proper divisors (1).

660348497 is an equidigital number, since it uses as much as digits as its factorization.

660348497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 660348497 is about 25697.2468758815. The cubic root of 660348497 is about 870.8119855718.

The spelling of 660348497 in words is "six hundred sixty million, three hundred forty-eight thousand, four hundred ninety-seven".