64516432 has 20 divisors (see below), whose sum is σ = 125130880. Its totient is φ = 32224608.

The previous prime is 64516421. The next prime is 64516447. The reversal of 64516432 is 23461546.

It is a junction number, because it is equal to n+sod(n) for n = 64516394 and 64516403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22369 + ... + 25087.

It is an arithmetic number, because the mean of its divisors is an integer number (6256544).

Almost surely, 2^64516432 is an apocalyptic number.

It is an amenable number.

64516432 is a deficient number, since it is larger than the sum of its proper divisors (60614448).

64516432 is a wasteful number, since it uses less digits than its factorization.

64516432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 4204 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 64516432 is about 8032.2121485927. The cubic root of 64516432 is about 401.0730190017.

Adding to 64516432 its reverse (23461546), we get a palindrome (87977978).

The spelling of 64516432 in words is "sixty-four million, five hundred sixteen thousand, four hundred thirty-two".