6780261 has 4 divisors (see below), whose sum is σ = 9040352. Its totient is φ = 4520172.

The previous prime is 6780259. The next prime is 6780271. The reversal of 6780261 is 1620876.

It is a happy number.

6780261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6780261 - 2¹ = 6780259 is a prime.

It is a D-number.

It is a Duffinian number.

6780261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780251) 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, 1130041 + ... + 1130046.

It is an arithmetic number, because the mean of its divisors is an integer number (2260088).

Almost surely, 2^6780261 is an apocalyptic number.

It is an amenable number.

6780261 is a deficient number, since it is larger than the sum of its proper divisors (2260091).

6780261 is a wasteful number, since it uses less digits than its factorization.

6780261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260090.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 6780261 is about 2603.8934309990. The cubic root of 6780261 is about 189.2701547976.

The spelling of 6780261 in words is "six million, seven hundred eighty thousand, two hundred sixty-one".