6787498261 has 4 divisors (see below), whose sum is σ = 6830730892. Its totient is φ = 6744265632.

The previous prime is 6787498259. The next prime is 6787498301. The reversal of 6787498261 is 1628947876.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3072595761 + 3714902500 = 55431^2 + 60950^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787498261 - 2¹ = 6787498259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6787498196 and 6787498205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6787498061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21616080 + ... + 21616393.

It is an arithmetic number, because the mean of its divisors is an integer number (1707682723).

Almost surely, 2^6787498261 is an apocalyptic number.

It is an amenable number.

6787498261 is a deficient number, since it is larger than the sum of its proper divisors (43232631).

6787498261 is a wasteful number, since it uses less digits than its factorization.

6787498261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43232630.

The product of its digits is 8128512, while the sum is 58.

The square root of 6787498261 is about 82386.2747124787. The cubic root of 6787498261 is about 1893.3747326925.

The spelling of 6787498261 in words is "six billion, seven hundred eighty-seven million, four hundred ninety-eight thousand, two hundred sixty-one".