6780071 has 4 divisors (see below), whose sum is σ = 6799632. Its totient is φ = 6760512.

The previous prime is 6780049. The next prime is 6780073. The reversal of 6780071 is 1700876.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6780071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9251 + ... + 9956.

It is an arithmetic number, because the mean of its divisors is an integer number (1699908).

Almost surely, 2^6780071 is an apocalyptic number.

6780071 is a deficient number, since it is larger than the sum of its proper divisors (19561).

6780071 is a wasteful number, since it uses less digits than its factorization.

6780071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19560.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 6780071 is about 2603.8569469155. The cubic root of 6780071 is about 189.2683868388.

The spelling of 6780071 in words is "six million, seven hundred eighty thousand, seventy-one".