63385457 has 2 divisors, whose sum is σ = 63385458. Its totient is φ = 63385456.

The previous prime is 63385433. The next prime is 63385459. The reversal of 63385457 is 75458336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46730896 + 16654561 = 6836^2 + 4081^2 .

It is a cyclic number.

It is not a de Polignac number, because 63385457 - 2²⁴ = 46608241 is a prime.

Together with 63385459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63385459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31692728 + 31692729.

It is an arithmetic number, because the mean of its divisors is an integer number (31692729).

Almost surely, 2^63385457 is an apocalyptic number.

It is an amenable number.

63385457 is a deficient number, since it is larger than the sum of its proper divisors (1).

63385457 is an equidigital number, since it uses as much as digits as its factorization.

63385457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 63385457 is about 7961.4984142434. The cubic root of 63385457 is about 398.7155821749.

The spelling of 63385457 in words is "sixty-three million, three hundred eighty-five thousand, four hundred fifty-seven".