66848445 has 48 divisors (see below), whose sum is σ = 119845440. Its totient is φ = 34449408.

The previous prime is 66848413. The next prime is 66848447. The reversal of 66848445 is 54484866.

It is not a de Polignac number, because 66848445 - 2⁵ = 66848413 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66848445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66848447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346269 + ... + 346461.

It is an arithmetic number, because the mean of its divisors is an integer number (2496780).

Almost surely, 2^66848445 is an apocalyptic number.

It is an amenable number.

66848445 is a deficient number, since it is larger than the sum of its proper divisors (52996995).

66848445 is a wasteful number, since it uses less digits than its factorization.

66848445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 423 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 66848445 is about 8176.0898356121. The cubic root of 66848445 is about 405.8483360980.

It can be divided in two parts, 6684 and 8445, that added together give a square (15129 = 123²).

The spelling of 66848445 in words is "sixty-six million, eight hundred forty-eight thousand, four hundred forty-five".