6667326740 has 24 divisors (see below), whose sum is σ = 14379803592. Its totient is φ = 2594851200.

The previous prime is 6667326737. The next prime is 6667326749. The reversal of 6667326740 is 476237666.

It can be written as a sum of positive squares in 4 ways, for example, as 2869316356 + 3798010384 = 53566^2 + 61628^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667326749) 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, 4504211 + ... + 4505690.

It is an arithmetic number, because the mean of its divisors is an integer number (599158483).

Almost surely, 2^6667326740 is an apocalyptic number.

It is an amenable number.

6667326740 is an abundant number, since it is smaller than the sum of its proper divisors (7712476852).

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

6667326740 is a wasteful number, since it uses less digits than its factorization.

6667326740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009947 (or 9009945 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 47.

The square root of 6667326740 is about 81653.7000998730. The cubic root of 6667326740 is about 1882.1341709910.

The spelling of 6667326740 in words is "six billion, six hundred sixty-seven million, three hundred twenty-six thousand, seven hundred forty".