64847812 has 12 divisors (see below), whose sum is σ = 113748796. Its totient is φ = 32348160.

The previous prime is 64847801. The next prime is 64847813. The reversal of 64847812 is 21874846.

It can be written as a sum of positive squares in 2 ways, for example, as 19501056 + 45346756 = 4416^2 + 6734^2 .

It is not an unprimeable number, because it can be changed into a prime (64847813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16989 + ... + 20452.

Almost surely, 2^64847812 is an apocalyptic number.

It is an amenable number.

64847812 is a deficient number, since it is larger than the sum of its proper divisors (48900984).

64847812 is a wasteful number, since it uses less digits than its factorization.

64847812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37878 (or 37876 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 64847812 is about 8052.8139181282. The cubic root of 64847812 is about 401.7585325784.

The spelling of 64847812 in words is "sixty-four million, eight hundred forty-seven thousand, eight hundred twelve".