66785354 has 8 divisors (see below), whose sum is σ = 100264260. Its totient is φ = 33363936.

The previous prime is 66785339. The next prime is 66785371. The reversal of 66785354 is 45358766.

66785354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 58171129 + 8614225 = 7627^2 + 2935^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11339 + ... + 16190.

Almost surely, 2^66785354 is an apocalyptic number.

66785354 is a deficient number, since it is larger than the sum of its proper divisors (33478906).

66785354 is a wasteful number, since it uses less digits than its factorization.

66785354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28744.

The product of its digits is 604800, while the sum is 44.

The square root of 66785354 is about 8172.2306624324. The cubic root of 66785354 is about 405.7206171611.

The spelling of 66785354 in words is "sixty-six million, seven hundred eighty-five thousand, three hundred fifty-four".