64641308 has 6 divisors (see below), whose sum is σ = 113122296.
Its totient is φ = 32320652.
The previous prime is 64641307. The next prime is 64641337. The reversal of 64641308 is 80314646.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (64641301) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080160 + ... + 8080167.
It is an arithmetic number, because the mean of its divisors is an integer number (18853716).
Almost surely, 264641308 is an apocalyptic number.
It is an amenable number.
64641308 is a deficient number, since it is larger than the sum of its proper divisors (48480988).
64641308 is a wasteful number, since it uses less digits than its factorization.
64641308 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16160331 (or 16160329 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 32.
The square root of 64641308 is about 8039.9818407755.
The cubic root of 64641308 is about 401.3316203820.
The spelling of 64641308 in words is "sixty-four million, six hundred forty-one thousand, three hundred eight".