64471312 has 10 divisors (see below), whose sum is σ = 124913198. Its totient is φ = 32235648.

The previous prime is 64471283. The next prime is 64471331. The reversal of 64471312 is 21317446.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 23970816 = 6364^2 + 4896^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2014713 + ... + 2014744.

Almost surely, 2^64471312 is an apocalyptic number.

It is an amenable number.

64471312 is a deficient number, since it is larger than the sum of its proper divisors (60441886).

64471312 is a wasteful number, since it uses less digits than its factorization.

64471312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029465 (or 4029459 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 64471312 is about 8029.4029665972. The cubic root of 64471312 is about 400.9794994940.

Adding to 64471312 its reverse (21317446), we get a palindrome (85788758).

The spelling of 64471312 in words is "sixty-four million, four hundred seventy-one thousand, three hundred twelve".