64472547 has 8 divisors (see below), whose sum is σ = 87372880. Its totient is φ = 42276960.

The previous prime is 64472543. The next prime is 64472549. The reversal of 64472547 is 74527446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64472547 - 2² = 64472543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64472543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175972 + ... + 176337.

It is an arithmetic number, because the mean of its divisors is an integer number (10921610).

Almost surely, 2^64472547 is an apocalyptic number.

64472547 is a deficient number, since it is larger than the sum of its proper divisors (22900333).

64472547 is a wasteful number, since it uses less digits than its factorization.

64472547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352373.

The product of its digits is 188160, while the sum is 39.

The square root of 64472547 is about 8029.4798710751. The cubic root of 64472547 is about 400.9820598396.

The spelling of 64472547 in words is "sixty-four million, four hundred seventy-two thousand, five hundred forty-seven".