64338529 has 4 divisors (see below), whose sum is σ = 65113776. Its totient is φ = 63563284.

The previous prime is 64338511. The next prime is 64338539. The reversal of 64338529 is 92583346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64338529 - 2⁷ = 64338401 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64338491 and 64338500.

It is not an unprimeable number, because it can be changed into a prime (64338539) 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, 387499 + ... + 387664.

It is an arithmetic number, because the mean of its divisors is an integer number (16278444).

Almost surely, 2^64338529 is an apocalyptic number.

It is an amenable number.

64338529 is a deficient number, since it is larger than the sum of its proper divisors (775247).

64338529 is an equidigital number, since it uses as much as digits as its factorization.

64338529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775246.

The product of its digits is 155520, while the sum is 40.

The square root of 64338529 is about 8021.1301572783. The cubic root of 64338529 is about 400.7040288813.

The spelling of 64338529 in words is "sixty-four million, three hundred thirty-eight thousand, five hundred twenty-nine".