64344347 has 4 divisors (see below), whose sum is σ = 64913880. Its totient is φ = 63774816.

The previous prime is 64344341. The next prime is 64344361. The reversal of 64344347 is 74344346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74344346 = 2 ⋅37172173.

It is a cyclic number.

It is not a de Polignac number, because 64344347 - 2²⁴ = 47567131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64344341) 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, 284597 + ... + 284822.

It is an arithmetic number, because the mean of its divisors is an integer number (16228470).

Almost surely, 2^64344347 is an apocalyptic number.

64344347 is a deficient number, since it is larger than the sum of its proper divisors (569533).

64344347 is a wasteful number, since it uses less digits than its factorization.

64344347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569532.

The product of its digits is 96768, while the sum is 35.

The square root of 64344347 is about 8021.4928161783. The cubic root of 64344347 is about 400.7161067959.

Subtracting 64344347 from its reverse (74344346), we obtain a palindrome (9999999).

The spelling of 64344347 in words is "sixty-four million, three hundred forty-four thousand, three hundred forty-seven".