6659462538 has 24 divisors (see below), whose sum is σ = 14818805508. Its totient is φ = 2159825472.

The previous prime is 6659462533. The next prime is 6659462543. The reversal of 6659462538 is 8352649566.

6659462538 is a `hidden beast` number, since 6 + 6 + 5 + 9 + 4 + 625 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6659462533) and next prime (6659462543).

It can be written as a sum of positive squares in 2 ways, for example, as 5485920489 + 1173542049 = 74067^2 + 34257^2 .

It is not an unprimeable number, because it can be changed into a prime (6659462533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4998931 + ... + 5000262.

Almost surely, 2^6659462538 is an apocalyptic number.

6659462538 is an abundant number, since it is smaller than the sum of its proper divisors (8159342970).

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

6659462538 is a wasteful number, since it uses less digits than its factorization.

6659462538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9999238 (or 9999235 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 6659462538 is about 81605.5300699652. The cubic root of 6659462538 is about 1881.3938789558.

The spelling of 6659462538 in words is "six billion, six hundred fifty-nine million, four hundred sixty-two thousand, five hundred thirty-eight".