6657281740 has 24 divisors (see below), whose sum is σ = 14034700512. Its totient is φ = 2652549120.

The previous prime is 6657281699. The next prime is 6657281749. The reversal of 6657281740 is 471827566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6657281749) 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, 642456 + ... + 652735.

It is an arithmetic number, because the mean of its divisors is an integer number (584779188).

Almost surely, 2^6657281740 is an apocalyptic number.

It is an amenable number.

6657281740 is an abundant number, since it is smaller than the sum of its proper divisors (7377418772).

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

6657281740 is a wasteful number, since it uses less digits than its factorization.

6657281740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295457 (or 1295455 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 6657281740 is about 81592.1671485689. The cubic root of 6657281740 is about 1881.1884876080.

The spelling of 6657281740 in words is "six billion, six hundred fifty-seven million, two hundred eighty-one thousand, seven hundred forty".