6774291261 has 36 divisors (see below), whose sum is σ = 10175531548. Its totient is φ = 4339723392.

The previous prime is 6774291253. The next prime is 6774291281. The reversal of 6774291261 is 1621924776.

It can be written as a sum of positive squares in 2 ways, for example, as 5805525636 + 968765625 = 76194^2 + 31125^2 .

It is not a de Polignac number, because 6774291261 - 2³ = 6774291253 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 (6774291241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2292561 + ... + 2295513.

Almost surely, 2^6774291261 is an apocalyptic number.

It is an amenable number.

6774291261 is a deficient number, since it is larger than the sum of its proper divisors (3401240287).

6774291261 is a wasteful number, since it uses less digits than its factorization.

6774291261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162 (or 3076 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 6774291261 is about 82306.0827703518. The cubic root of 6774291261 is about 1892.1459030948.

The spelling of 6774291261 in words is "six billion, seven hundred seventy-four million, two hundred ninety-one thousand, two hundred sixty-one".