64516433 has 8 divisors (see below), whose sum is σ = 65368800. Its totient is φ = 63669888.

The previous prime is 64516421. The next prime is 64516447. The reversal of 64516433 is 33461546.

64516433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64516433 - 2¹² = 64512337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64516433.

It is not an unprimeable number, because it can be changed into a prime (64516453) 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 in 7 ways as a sum of consecutive naturals, for example, 23585 + ... + 26177.

It is an arithmetic number, because the mean of its divisors is an integer number (8171100).

Almost surely, 2^64516433 is an apocalyptic number.

It is an amenable number.

64516433 is a deficient number, since it is larger than the sum of its proper divisors (852367).

64516433 is a wasteful number, since it uses less digits than its factorization.

64516433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911.

The product of its digits is 25920, while the sum is 32.

The square root of 64516433 is about 8032.2122108420. The cubic root of 64516433 is about 401.0730210739.

Adding to 64516433 its reverse (33461546), we get a palindrome (97977979).

The spelling of 64516433 in words is "sixty-four million, five hundred sixteen thousand, four hundred thirty-three".