66140346 has 8 divisors (see below), whose sum is σ = 132280704. Its totient is φ = 22046780.

The previous prime is 66140297. The next prime is 66140351. The reversal of 66140346 is 64304166.

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

66140346 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, 5511690 + ... + 5511701.

It is an arithmetic number, because the mean of its divisors is an integer number (16535088).

Almost surely, 2^66140346 is an apocalyptic number.

66140346 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.

66140346 is a wasteful number, since it uses less digits than its factorization.

66140346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023396.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 66140346 is about 8132.6715167895. The cubic root of 66140346 is about 404.4102497008.

The spelling of 66140346 in words is "sixty-six million, one hundred forty thousand, three hundred forty-six".