64356137 has 2 divisors, whose sum is σ = 64356138. Its totient is φ = 64356136.

The previous prime is 64356121. The next prime is 64356263. The reversal of 64356137 is 73165346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32501401 + 31854736 = 5701^2 + 5644^2 .

It is a cyclic number.

It is not a de Polignac number, because 64356137 - 2⁴ = 64356121 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 64356097 and 64356106.

It is not a weakly prime, because it can be changed into another prime (64356637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32178068 + 32178069.

It is an arithmetic number, because the mean of its divisors is an integer number (32178069).

Almost surely, 2^64356137 is an apocalyptic number.

It is an amenable number.

64356137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64356137 is an equidigital number, since it uses as much as digits as its factorization.

64356137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 64356137 is about 8022.2276831314. The cubic root of 64356137 is about 400.7405800900.

The spelling of 64356137 in words is "sixty-four million, three hundred fifty-six thousand, one hundred thirty-seven".