6761406691 has 4 divisors (see below), whose sum is σ = 7281514912. Its totient is φ = 6241298472.

The previous prime is 6761406679. The next prime is 6761406737. The reversal of 6761406691 is 1966041676.

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-6761406691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6761406601) 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, 260054091 + ... + 260054116.

It is an arithmetic number, because the mean of its divisors is an integer number (1820378728).

Almost surely, 2^6761406691 is an apocalyptic number.

6761406691 is a deficient number, since it is larger than the sum of its proper divisors (520108221).

6761406691 is a wasteful number, since it uses less digits than its factorization.

6761406691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520108220.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 6761406691 is about 82227.7732338655. The cubic root of 6761406691 is about 1890.9455335315.

The spelling of 6761406691 in words is "six billion, seven hundred sixty-one million, four hundred six thousand, six hundred ninety-one".