64350257 has 2 divisors, whose sum is σ = 64350258. Its totient is φ = 64350256.

The previous prime is 64350239. The next prime is 64350259. The reversal of 64350257 is 75205346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35952016 + 28398241 = 5996^2 + 5329^2 .

It is a cyclic number.

It is not a de Polignac number, because 64350257 - 2⁶ = 64350193 is a prime.

Together with 64350259, 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 (64350259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32175128 + 32175129.

It is an arithmetic number, because the mean of its divisors is an integer number (32175129).

Almost surely, 2^64350257 is an apocalyptic number.

It is an amenable number.

64350257 is a deficient number, since it is larger than the sum of its proper divisors (1).

64350257 is an equidigital number, since it uses as much as digits as its factorization.

64350257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 64350257 is about 8021.8611930150. The cubic root of 64350257 is about 400.7283749531.

The spelling of 64350257 in words is "sixty-four million, three hundred fifty thousand, two hundred fifty-seven".