66065854 has 8 divisors (see below), whose sum is σ = 99197280. Its totient is φ = 33000096.

The previous prime is 66065843. The next prime is 66065873. The reversal of 66065854 is 45856066.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13819 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (12399660).

Almost surely, 2^66065854 is an apocalyptic number.

66065854 is a deficient number, since it is larger than the sum of its proper divisors (33131426).

66065854 is a wasteful number, since it uses less digits than its factorization.

66065854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32834.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 66065854 is about 8128.0904276466. The cubic root of 66065854 is about 404.2583673930.

The spelling of 66065854 in words is "sixty-six million, sixty-five thousand, eight hundred fifty-four".