66340782 has 40 divisors (see below), whose sum is σ = 151832736. Its totient is φ = 21640608.

The previous prime is 66340727. The next prime is 66340811. The reversal of 66340782 is 28704366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3258 + ... + 11970.

Almost surely, 2^66340782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66340782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75916368).

66340782 is an abundant number, since it is smaller than the sum of its proper divisors (85491954).

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

66340782 is a wasteful number, since it uses less digits than its factorization.

66340782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8774 (or 8765 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 66340782 is about 8144.9850828593. The cubic root of 66340782 is about 404.8183547570.

The spelling of 66340782 in words is "sixty-six million, three hundred forty thousand, seven hundred eighty-two".