64413331 has 4 divisors (see below), whose sum is σ = 65374792. Its totient is φ = 63451872.

The previous prime is 64413313. The next prime is 64413341. The reversal of 64413331 is 13331446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64413331 - 2⁵ = 64413299 is a prime.

It is a super-2 number, since 2×64413331² = 8298154421031122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64413296 and 64413305.

It is not an unprimeable number, because it can be changed into a prime (64413301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480630 + ... + 480763.

It is an arithmetic number, because the mean of its divisors is an integer number (16343698).

Almost surely, 2^64413331 is an apocalyptic number.

64413331 is a deficient number, since it is larger than the sum of its proper divisors (961461).

64413331 is an equidigital number, since it uses as much as digits as its factorization.

64413331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961460.

The product of its digits is 2592, while the sum is 25.

The square root of 64413331 is about 8025.7916120468. The cubic root of 64413331 is about 400.8592591127.

Adding to 64413331 its reverse (13331446), we get a palindrome (77744777).

The spelling of 64413331 in words is "sixty-four million, four hundred thirteen thousand, three hundred thirty-one".