66851346 has 8 divisors (see below), whose sum is σ = 133702704. Its totient is φ = 22283780.

The previous prime is 66851311. The next prime is 66851377. The reversal of 66851346 is 64315866.

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

66851346 is an admirable number.

It is a Curzon 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, 5570940 + ... + 5570951.

It is an arithmetic number, because the mean of its divisors is an integer number (16712838).

Almost surely, 2^66851346 is an apocalyptic number.

66851346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66851346 is a wasteful number, since it uses less digits than its factorization.

66851346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141896.

The product of its digits is 103680, while the sum is 39.

The square root of 66851346 is about 8176.2672412293. The cubic root of 66851346 is about 405.8542068353.

The spelling of 66851346 in words is "sixty-six million, eight hundred fifty-one thousand, three hundred forty-six".