64430497 has 2 divisors, whose sum is σ = 64430498. Its totient is φ = 64430496.

The previous prime is 64430479. The next prime is 64430503. The reversal of 64430497 is 79403446.

64430497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (64430479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58125376 + 6305121 = 7624^2 + 2511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64430497 is a prime.

It is not a weakly prime, because it can be changed into another prime (64430417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32215248 + 32215249.

It is an arithmetic number, because the mean of its divisors is an integer number (32215249).

Almost surely, 2^64430497 is an apocalyptic number.

It is an amenable number.

64430497 is a deficient number, since it is larger than the sum of its proper divisors (1).

64430497 is an equidigital number, since it uses as much as digits as its factorization.

64430497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64430497 is about 8026.8609680248. The cubic root of 64430497 is about 400.8948652973.

The spelling of 64430497 in words is "sixty-four million, four hundred thirty thousand, four hundred ninety-seven".