6660782 has 4 divisors (see below), whose sum is σ = 9991176. Its totient is φ = 3330390.

The previous prime is 6660781. The next prime is 6660791. The reversal of 6660782 is 2870666.

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×6660782⁴ (a number of 28 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665194 + ... + 1665197.

It is an arithmetic number, because the mean of its divisors is an integer number (2497794).

Almost surely, 2^6660782 is an apocalyptic number.

6660782 is a deficient number, since it is larger than the sum of its proper divisors (3330394).

6660782 is a wasteful number, since it uses less digits than its factorization.

6660782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330393.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 6660782 is about 2580.8490850881. The cubic root of 6660782 is about 188.1518126410.

The spelling of 6660782 in words is "six million, six hundred sixty thousand, seven hundred eighty-two".