66805334 has 16 divisors (see below), whose sum is σ = 102717072. Its totient is φ = 32574048.

The previous prime is 66805331. The next prime is 66805367. The reversal of 66805334 is 43350866.

It is a junction number, because it is equal to n+sod(n) for n = 66805294 and 66805303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66805331) 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, 16517 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (6419817).

Almost surely, 2^66805334 is an apocalyptic number.

66805334 is a deficient number, since it is larger than the sum of its proper divisors (35911738).

66805334 is a wasteful number, since it uses less digits than its factorization.

66805334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 66805334 is about 8173.4530034741. The cubic root of 66805334 is about 405.7610725863.

The spelling of 66805334 in words is "sixty-six million, eight hundred five thousand, three hundred thirty-four".