64395047 has 8 divisors (see below), whose sum is σ = 67873200. Its totient is φ = 60925824.

The previous prime is 64395043. The next prime is 64395049. The reversal of 64395047 is 74059346.

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 64395047 - 2² = 64395043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64395047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64395043) 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, 16829 + ... + 20297.

It is an arithmetic number, because the mean of its divisors is an integer number (8484150).

Almost surely, 2^64395047 is an apocalyptic number.

64395047 is a deficient number, since it is larger than the sum of its proper divisors (3478153).

64395047 is a wasteful number, since it uses less digits than its factorization.

64395047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 64395047 is about 8024.6524535334. The cubic root of 64395047 is about 400.8213269840.

The spelling of 64395047 in words is "sixty-four million, three hundred ninety-five thousand, forty-seven".