63665297 has 2 divisors, whose sum is σ = 63665298. Its totient is φ = 63665296.

The previous prime is 63665269. The next prime is 63665309. The reversal of 63665297 is 79256636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52649536 + 11015761 = 7256^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 63665297 - 2¹⁴ = 63648913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63665267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31832648 + 31832649.

It is an arithmetic number, because the mean of its divisors is an integer number (31832649).

Almost surely, 2^63665297 is an apocalyptic number.

It is an amenable number.

63665297 is a deficient number, since it is larger than the sum of its proper divisors (1).

63665297 is an equidigital number, since it uses as much as digits as its factorization.

63665297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 63665297 is about 7979.0536406268. The cubic root of 63665297 is about 399.3014829783.

The spelling of 63665297 in words is "sixty-three million, six hundred sixty-five thousand, two hundred ninety-seven".