66847344 has 40 divisors (see below), whose sum is σ = 173441280. Its totient is φ = 22185408.

The previous prime is 66847337. The next prime is 66847357. The reversal of 66847344 is 44374866.

It is a junction number, because it is equal to n+sod(n) for n = 66847296 and 66847305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8559 + ... + 14385.

It is an arithmetic number, because the mean of its divisors is an integer number (4336032).

Almost surely, 2^66847344 is an apocalyptic number.

It is an amenable number.

66847344 is an abundant number, since it is smaller than the sum of its proper divisors (106593936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66847344 is a wasteful number, since it uses less digits than its factorization.

66847344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077 (or 6071 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 66847344 is about 8176.0225048614. The cubic root of 66847344 is about 405.8461079660.

It can be divided in two parts, 6684 and 7344, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 66847344 in words is "sixty-six million, eight hundred forty-seven thousand, three hundred forty-four".