64656700067 has 2 divisors, whose sum is σ = 64656700068. Its totient is φ = 64656700066.

The previous prime is 64656700063. The next prime is 64656700091. The reversal of 64656700067 is 76000765646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64656700067 - 2² = 64656700063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64656699994 and 64656700030.

It is not a weakly prime, because it can be changed into another prime (64656700063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32328350033 + 32328350034.

It is an arithmetic number, because the mean of its divisors is an integer number (32328350034).

Almost surely, 2^64656700067 is an apocalyptic number.

64656700067 is a deficient number, since it is larger than the sum of its proper divisors (1).

64656700067 is an equidigital number, since it uses as much as digits as its factorization.

64656700067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 64656700067 in words is "sixty-four billion, six hundred fifty-six million, seven hundred thousand, sixty-seven".