64688101 has 2 divisors, whose sum is σ = 64688102. Its totient is φ = 64688100.

The previous prime is 64688089. The next prime is 64688159. The reversal of 64688101 is 10188646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60684100 + 4004001 = 7790^2 + 2001^2 .

It is a cyclic number.

It is not a de Polignac number, because 64688101 - 2⁵ = 64688069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64688191) 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, 32344050 + 32344051.

It is an arithmetic number, because the mean of its divisors is an integer number (32344051).

Almost surely, 2^64688101 is an apocalyptic number.

It is an amenable number.

64688101 is a deficient number, since it is larger than the sum of its proper divisors (1).

64688101 is an equidigital number, since it uses as much as digits as its factorization.

64688101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 64688101 is about 8042.8913333452. The cubic root of 64688101 is about 401.4284366001.

The spelling of 64688101 in words is "sixty-four million, six hundred eighty-eight thousand, one hundred one".