6780742 has 4 divisors (see below), whose sum is σ = 10171116. Its totient is φ = 3390370.

The previous prime is 6780707. The next prime is 6780743. The reversal of 6780742 is 2470876.

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

It is a junction number, because it is equal to n+sod(n) for n = 6780698 and 6780707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695184 + ... + 1695187.

It is an arithmetic number, because the mean of its divisors is an integer number (2542779).

Almost surely, 2^6780742 is an apocalyptic number.

6780742 is a deficient number, since it is larger than the sum of its proper divisors (3390374).

6780742 is a wasteful number, since it uses less digits than its factorization.

6780742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390373.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6780742 is about 2603.9857910519. The cubic root of 6780742 is about 189.2746303771.

The spelling of 6780742 in words is "six million, seven hundred eighty thousand, seven hundred forty-two".