64430137 has 2 divisors, whose sum is σ = 64430138. Its totient is φ = 64430136.

The previous prime is 64430129. The next prime is 64430167. The reversal of 64430137 is 73103446.

64430137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 254016 = 8011^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 64430137 - 2³ = 64430129 is a prime.

It is equal to p_3809026 and since 64430137 and 3809026 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64430167) 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, 32215068 + 32215069.

It is an arithmetic number, because the mean of its divisors is an integer number (32215069).

Almost surely, 2^64430137 is an apocalyptic number.

It is an amenable number.

64430137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64430137 is an equidigital number, since it uses as much as digits as its factorization.

64430137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 64430137 is about 8026.8385432871. The cubic root of 64430137 is about 400.8941186405.

The spelling of 64430137 in words is "sixty-four million, four hundred thirty thousand, one hundred thirty-seven".