6740406671 has 4 divisors (see below), whose sum is σ = 6753915000. Its totient is φ = 6726898344.

The previous prime is 6740406667. The next prime is 6740406709. The reversal of 6740406671 is 1766040476.

It is a happy number.

6740406671 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.

It is a cyclic number.

It is not a de Polignac number, because 6740406671 - 2² = 6740406667 is a prime.

It is a super-2 number, since 2×6740406671² = 90866164180922604482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6740406271) 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, 6753416 + ... + 6754413.

It is an arithmetic number, because the mean of its divisors is an integer number (1688478750).

Almost surely, 2^6740406671 is an apocalyptic number.

6740406671 is a deficient number, since it is larger than the sum of its proper divisors (13508329).

6740406671 is a wasteful number, since it uses less digits than its factorization.

6740406671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13508328.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 6740406671 is about 82099.9797259415. The cubic root of 6740406671 is about 1888.9858290834.

The spelling of 6740406671 in words is "six billion, seven hundred forty million, four hundred six thousand, six hundred seventy-one".