64471432 has 8 divisors (see below), whose sum is σ = 120883950. Its totient is φ = 32235712.

The previous prime is 64471417. The next prime is 64471439. The reversal of 64471432 is 23417446.

64471432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 54756 = 8026^2 + 234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 64471394 and 64471403.

It is not an unprimeable number, because it can be changed into a prime (64471439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4029457 + ... + 4029472.

Almost surely, 2^64471432 is an apocalyptic number.

It is an amenable number.

64471432 is a deficient number, since it is larger than the sum of its proper divisors (56412518).

64471432 is a wasteful number, since it uses less digits than its factorization.

64471432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058935 (or 8058931 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 64471432 is about 8029.4104391294. The cubic root of 64471432 is about 400.9797482740.

Adding to 64471432 its reverse (23417446), we get a palindrome (87888878).

The spelling of 64471432 in words is "sixty-four million, four hundred seventy-one thousand, four hundred thirty-two".