64281137 has 2 divisors, whose sum is σ = 64281138. Its totient is φ = 64281136.

The previous prime is 64281127. The next prime is 64281223. The reversal of 64281137 is 73118246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36917776 + 27363361 = 6076^2 + 5231^2 .

It is a cyclic number.

It is not a de Polignac number, because 64281137 - 2⁴ = 64281121 is a prime.

It is not a weakly prime, because it can be changed into another prime (64281127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32140568 + 32140569.

It is an arithmetic number, because the mean of its divisors is an integer number (32140569).

Almost surely, 2^64281137 is an apocalyptic number.

It is an amenable number.

64281137 is a deficient number, since it is larger than the sum of its proper divisors (1).

64281137 is an equidigital number, since it uses as much as digits as its factorization.

64281137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 64281137 is about 8017.5518083764. The cubic root of 64281137 is about 400.5848465528.

The spelling of 64281137 in words is "sixty-four million, two hundred eighty-one thousand, one hundred thirty-seven".