6659670 has 16 divisors (see below), whose sum is σ = 15983280. Its totient is φ = 1775904.

The previous prime is 6659663. The next prime is 6659677. The reversal of 6659670 is 769566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6659663) and next prime (6659677).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659677) 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 in 7 ways as a sum of consecutive naturals, for example, 110965 + ... + 111024.

It is an arithmetic number, because the mean of its divisors is an integer number (998955).

Almost surely, 2^6659670 is an apocalyptic number.

6659670 is an abundant number, since it is smaller than the sum of its proper divisors (9323610).

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

6659670 is a wasteful number, since it uses less digits than its factorization.

6659670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221999.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 6659670 is about 2580.6336431195. The cubic root of 6659670 is about 188.1413415752.

It can be divided in two parts, 66596 and 70, that added together give a palindrome (66666).

The spelling of 6659670 in words is "six million, six hundred fifty-nine thousand, six hundred seventy".