6782645 has 8 divisors (see below), whose sum is σ = 8401920. Its totient is φ = 5250960.

The previous prime is 6782641. The next prime is 6782663. The reversal of 6782645 is 5462876.

It is a happy number.

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

It is not a de Polignac number, because 6782645 - 2² = 6782641 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6782599 and 6782608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6782641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21725 + ... + 22034.

It is an arithmetic number, because the mean of its divisors is an integer number (1050240).

Almost surely, 2^6782645 is an apocalyptic number.

It is an amenable number.

6782645 is a deficient number, since it is larger than the sum of its proper divisors (1619275).

6782645 is a wasteful number, since it uses less digits than its factorization.

6782645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43795.

The product of its digits is 80640, while the sum is 38.

The square root of 6782645 is about 2604.3511667976. The cubic root of 6782645 is about 189.2923352208.

The spelling of 6782645 in words is "six million, seven hundred eighty-two thousand, six hundred forty-five".