63565487 has 2 divisors, whose sum is σ = 63565488. Its totient is φ = 63565486.

The previous prime is 63565459. The next prime is 63565493. The reversal of 63565487 is 78456536.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63565487 - 2⁶ = 63565423 is a prime.

It is a super-2 number, since 2×63565487² = 8081142275094338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63565417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31782743 + 31782744.

It is an arithmetic number, because the mean of its divisors is an integer number (31782744).

Almost surely, 2^63565487 is an apocalyptic number.

63565487 is a deficient number, since it is larger than the sum of its proper divisors (1).

63565487 is an equidigital number, since it uses as much as digits as its factorization.

63565487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 44.

The square root of 63565487 is about 7972.7966862325. The cubic root of 63565487 is about 399.0927081932.

The spelling of 63565487 in words is "sixty-three million, five hundred sixty-five thousand, four hundred eighty-seven".