64873147 has 4 divisors (see below), whose sum is σ = 64920160. Its totient is φ = 64826136.

The previous prime is 64873121. The next prime is 64873157. The reversal of 64873147 is 74137846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74137846 = 2 ⋅37068923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64873147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64873117) 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, 21372 + ... + 24217.

It is an arithmetic number, because the mean of its divisors is an integer number (16230040).

Almost surely, 2^64873147 is an apocalyptic number.

64873147 is a deficient number, since it is larger than the sum of its proper divisors (47013).

64873147 is a wasteful number, since it uses less digits than its factorization.

64873147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47012.

The product of its digits is 112896, while the sum is 40.

The square root of 64873147 is about 8054.3868171326. The cubic root of 64873147 is about 401.8108459712.

The spelling of 64873147 in words is "sixty-four million, eight hundred seventy-three thousand, one hundred forty-seven".