66847701 has 8 divisors (see below), whose sum is σ = 89169184. Its totient is φ = 44545680.

The previous prime is 66847691. The next prime is 66847727. The reversal of 66847701 is 10774866.

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

It is not a de Polignac number, because 66847701 - 2²⁵ = 33293269 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 66847701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66847751) 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, 8055 + ... + 14091.

It is an arithmetic number, because the mean of its divisors is an integer number (11146148).

Almost surely, 2^66847701 is an apocalyptic number.

It is an amenable number.

66847701 is a deficient number, since it is larger than the sum of its proper divisors (22321483).

66847701 is a wasteful number, since it uses less digits than its factorization.

66847701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9731.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 66847701 is about 8176.0443369639. The cubic root of 66847701 is about 405.8468304420.

The spelling of 66847701 in words is "sixty-six million, eight hundred forty-seven thousand, seven hundred one".