64466513 has 4 divisors (see below), whose sum is σ = 64483428. Its totient is φ = 64449600.

The previous prime is 64466483. The next prime is 64466531. The reversal of 64466513 is 31566446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31566446 = 2 ⋅15783223.

It can be written as a sum of positive squares in 2 ways, for example, as 30162064 + 34304449 = 5492^2 + 5857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64466513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64466573) 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, 245 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (16120857).

Almost surely, 2^64466513 is an apocalyptic number.

It is an amenable number.

64466513 is a deficient number, since it is larger than the sum of its proper divisors (16915).

64466513 is a wasteful number, since it uses less digits than its factorization.

64466513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914.

The product of its digits is 51840, while the sum is 35.

The square root of 64466513 is about 8029.1041218806. The cubic root of 64466513 is about 400.9695501160.

The spelling of 64466513 in words is "sixty-four million, four hundred sixty-six thousand, five hundred thirteen".