63454709 has 2 divisors, whose sum is σ = 63454710. Its totient is φ = 63454708.

The previous prime is 63454687. The next prime is 63454711. The reversal of 63454709 is 90745436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44182609 + 19272100 = 6647^2 + 4390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63454709 is a prime.

Together with 63454711, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63454789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31727354 + 31727355.

It is an arithmetic number, because the mean of its divisors is an integer number (31727355).

Almost surely, 2^63454709 is an apocalyptic number.

It is an amenable number.

63454709 is a deficient number, since it is larger than the sum of its proper divisors (1).

63454709 is an equidigital number, since it uses as much as digits as its factorization.

63454709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 63454709 is about 7965.8464082607. The cubic root of 63454709 is about 398.8607353541.

The spelling of 63454709 in words is "sixty-three million, four hundred fifty-four thousand, seven hundred nine".