6734640791 has 2 divisors, whose sum is σ = 6734640792. Its totient is φ = 6734640790.

The previous prime is 6734640713. The next prime is 6734640793. The reversal of 6734640791 is 1970464376.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6734640791 - 2³⁰ = 5660898967 is a prime.

It is a super-2 number, since 2×6734640791² = 90710773167602211362, which contains 22 as substring.

Together with 6734640793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6734640793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3367320395 + 3367320396.

It is an arithmetic number, because the mean of its divisors is an integer number (3367320396).

Almost surely, 2^6734640791 is an apocalyptic number.

6734640791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6734640791 is an equidigital number, since it uses as much as digits as its factorization.

6734640791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 6734640791 is about 82064.8572228088. The cubic root of 6734640791 is about 1888.4470498835.

It can be divided in two parts, 673 and 4640791, that added together give a palindrome (4641464).

The spelling of 6734640791 in words is "six billion, seven hundred thirty-four million, six hundred forty thousand, seven hundred ninety-one".