6659434 has 4 divisors (see below), whose sum is σ = 9989154. Its totient is φ = 3329716.

The previous prime is 6659417. The next prime is 6659437. The reversal of 6659434 is 4349566.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6487209 + 172225 = 2547^2 + 415^2 .

It is a super-2 number, since 2×6659434² = 88696122400712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6659393 and 6659402.

It is not an unprimeable number, because it can be changed into a prime (6659437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664857 + ... + 1664860.

Almost surely, 2^6659434 is an apocalyptic number.

6659434 is a deficient number, since it is larger than the sum of its proper divisors (3329720).

6659434 is a wasteful number, since it uses less digits than its factorization.

6659434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329719.

The product of its digits is 77760, while the sum is 37.

The square root of 6659434 is about 2580.5879175103. The cubic root of 6659434 is about 188.1391191487.

The spelling of 6659434 in words is "six million, six hundred fifty-nine thousand, four hundred thirty-four".