6740666740 has 24 divisors (see below), whose sum is σ = 14182591752. Its totient is φ = 2691087360.

The previous prime is 6740666693. The next prime is 6740666743. The reversal of 6740666740 is 476660476.

It can be written as a sum of positive squares in 4 ways, for example, as 93199716 + 6647467024 = 9654^2 + 81532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6740666743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313029 + ... + 333868.

It is an arithmetic number, because the mean of its divisors is an integer number (590941323).

Almost surely, 2^6740666740 is an apocalyptic number.

It is an amenable number.

6740666740 is an abundant number, since it is smaller than the sum of its proper divisors (7441925012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6740666740 is a wasteful number, since it uses less digits than its factorization.

6740666740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647427 (or 647425 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The square root of 6740666740 is about 82101.5635661100. The cubic root of 6740666740 is about 1889.0101233810.

The spelling of 6740666740 in words is "six billion, seven hundred forty million, six hundred sixty-six thousand, seven hundred forty".