64464137 has 2 divisors, whose sum is σ = 64464138. Its totient is φ = 64464136.

The previous prime is 64464133. The next prime is 64464143. The reversal of 64464137 is 73146446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 1990921 = 7904^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 64464137 - 2² = 64464133 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64464097 and 64464106.

It is not a weakly prime, because it can be changed into another prime (64464133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32232068 + 32232069.

It is an arithmetic number, because the mean of its divisors is an integer number (32232069).

Almost surely, 2^64464137 is an apocalyptic number.

It is an amenable number.

64464137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64464137 is an equidigital number, since it uses as much as digits as its factorization.

64464137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 64464137 is about 8028.9561588042. The cubic root of 64464137 is about 400.9646239649.

The spelling of 64464137 in words is "sixty-four million, four hundred sixty-four thousand, one hundred thirty-seven".