6670659 has 16 divisors (see below), whose sum is σ = 9190944. Its totient is φ = 4300800.

The previous prime is 6670649. The next prime is 6670661. The reversal of 6670659 is 9560766.

It is a happy number.

It is not a de Polignac number, because 6670659 - 2⁸ = 6670403 is a prime.

It is an Ulam number.

6670659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6670649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23599 + ... + 23879.

It is an arithmetic number, because the mean of its divisors is an integer number (574434).

Almost surely, 2^6670659 is an apocalyptic number.

6670659 is a deficient number, since it is larger than the sum of its proper divisors (2520285).

6670659 is a wasteful number, since it uses less digits than its factorization.

6670659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

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

The square root of 6670659 is about 2582.7618937873. The cubic root of 6670659 is about 188.2447675743.

The spelling of 6670659 in words is "six million, six hundred seventy thousand, six hundred fifty-nine".