64687097 has 2 divisors, whose sum is σ = 64687098. Its totient is φ = 64687096.

The previous prime is 64687079. The next prime is 64687099. The reversal of 64687097 is 79078646.

It is a happy number.

Together with previous prime (64687079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 942841 = 7984^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 64687097 - 2¹² = 64683001 is a prime.

Together with 64687099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64687099) 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, 32343548 + 32343549.

It is an arithmetic number, because the mean of its divisors is an integer number (32343549).

Almost surely, 2^64687097 is an apocalyptic number.

It is an amenable number.

64687097 is a deficient number, since it is larger than the sum of its proper divisors (1).

64687097 is an equidigital number, since it uses as much as digits as its factorization.

64687097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 64687097 is about 8042.8289177378. The cubic root of 64687097 is about 401.4263597821.

The spelling of 64687097 in words is "sixty-four million, six hundred eighty-seven thousand, ninety-seven".