6669257 has 8 divisors (see below), whose sum is σ = 7799616. Its totient is φ = 5583312.

The previous prime is 6669251. The next prime is 6669269. The reversal of 6669257 is 7529666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6669257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6669251) 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, 10778 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (974952).

Almost surely, 2^6669257 is an apocalyptic number.

It is an amenable number.

6669257 is a deficient number, since it is larger than the sum of its proper divisors (1130359).

6669257 is a wasteful number, since it uses less digits than its factorization.

6669257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22207.

The product of its digits is 136080, while the sum is 41.

The square root of 6669257 is about 2582.4904646484. The cubic root of 6669257 is about 188.2315785897.

The spelling of 6669257 in words is "six million, six hundred sixty-nine thousand, two hundred fifty-seven".