64515441 has 8 divisors (see below), whose sum is σ = 86153760. Its totient is φ = 42943712.

The previous prime is 64515413. The next prime is 64515449. The reversal of 64515441 is 14451546.

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 64515441 - 2⁷ = 64515313 is a prime.

It is a super-3 number, since 3×64515441³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64515399 and 64515408.

It is not an unprimeable number, because it can be changed into a prime (64515449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14340 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (10769220).

Almost surely, 2^64515441 is an apocalyptic number.

It is an amenable number.

64515441 is a deficient number, since it is larger than the sum of its proper divisors (21638319).

64515441 is a wasteful number, since it uses less digits than its factorization.

64515441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33295.

The product of its digits is 9600, while the sum is 30.

The square root of 64515441 is about 8032.1504592481. The cubic root of 64515441 is about 401.0709654401.

Adding to 64515441 its reverse (14451546), we get a palindrome (78966987).

The spelling of 64515441 in words is "sixty-four million, five hundred fifteen thousand, four hundred forty-one".