64823137 has 2 divisors, whose sum is σ = 64823138. Its totient is φ = 64823136.

The previous prime is 64823111. The next prime is 64823147. The reversal of 64823137 is 73132846.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51251281 + 13571856 = 7159^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 64823137 - 2²³ = 56434529 is a prime.

It is not a weakly prime, because it can be changed into another prime (64823107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32411568 + 32411569.

It is an arithmetic number, because the mean of its divisors is an integer number (32411569).

Almost surely, 2^64823137 is an apocalyptic number.

It is an amenable number.

64823137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64823137 is an equidigital number, since it uses as much as digits as its factorization.

64823137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 64823137 is about 8051.2816992079. The cubic root of 64823137 is about 401.7075688984.

The spelling of 64823137 in words is "sixty-four million, eight hundred twenty-three thousand, one hundred thirty-seven".