64641307 has 2 divisors, whose sum is σ = 64641308.
Its totient is φ = 64641306.
The previous prime is 64641301. The next prime is 64641337. The reversal of 64641307 is 70314646.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 64641307 - 23 = 64641299 is a prime.
It is not a weakly prime, because it can be changed into another prime (64641301) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32320653 + 32320654.
It is an arithmetic number, because the mean of its divisors is an integer number (32320654).
Almost surely, 264641307 is an apocalyptic number.
64641307 is a deficient number, since it is larger than the sum of its proper divisors (1).
64641307 is an equidigital number, since it uses as much as digits as its factorization.
64641307 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 12096, while the sum is 31.
The square root of 64641307 is about 8039.9817785863.
The cubic root of 64641307 is about 401.3316183124.
It can be divided in two parts, 6464 and 1307, that multiplied together give a palindrome (8448448).
The spelling of 64641307 in words is "sixty-four million, six hundred forty-one thousand, three hundred seven".