64347447 has 8 divisors (see below), whose sum is σ = 86022144. Its totient is φ = 42785528.

The previous prime is 64347419. The next prime is 64347449. The reversal of 64347447 is 74474346.

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 64347447 - 2⁸ = 64347191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64347449) 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, 26853 + ... + 29150.

It is an arithmetic number, because the mean of its divisors is an integer number (10752768).

Almost surely, 2^64347447 is an apocalyptic number.

64347447 is a deficient number, since it is larger than the sum of its proper divisors (21674697).

64347447 is a wasteful number, since it uses less digits than its factorization.

64347447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56389.

The product of its digits is 225792, while the sum is 39.

The square root of 64347447 is about 8021.6860447165. The cubic root of 64347447 is about 400.7225419636.

The spelling of 64347447 in words is "sixty-four million, three hundred forty-seven thousand, four hundred forty-seven".