64616137 has 2 divisors, whose sum is σ = 64616138. Its totient is φ = 64616136.

The previous prime is 64616129. The next prime is 64616161. The reversal of 64616137 is 73161646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41229241 + 23386896 = 6421^2 + 4836^2 .

It is a cyclic number.

It is not a de Polignac number, because 64616137 - 2³ = 64616129 is a prime.

It is not a weakly prime, because it can be changed into another prime (64616107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32308068 + 32308069.

It is an arithmetic number, because the mean of its divisors is an integer number (32308069).

Almost surely, 2^64616137 is an apocalyptic number.

It is an amenable number.

64616137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64616137 is an equidigital number, since it uses as much as digits as its factorization.

64616137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 64616137 is about 8038.4163241275. The cubic root of 64616137 is about 401.2795214480.

The spelling of 64616137 in words is "sixty-four million, six hundred sixteen thousand, one hundred thirty-seven".