6656469 has 16 divisors (see below), whose sum is σ = 9600768. Its totient is φ = 4086272.

The previous prime is 6656459. The next prime is 6656471. The reversal of 6656469 is 9646566.

It is a cyclic number.

It is not a de Polignac number, because 6656469 - 2⁵ = 6656437 is a prime.

It is a super-2 number, since 2×6656469² = 88617159095922, which contains 22 as substring.

6656469 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6656469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009 + ... + 3785.

It is an arithmetic number, because the mean of its divisors is an integer number (600048).

Almost surely, 2^6656469 is an apocalyptic number.

It is an amenable number.

6656469 is a deficient number, since it is larger than the sum of its proper divisors (2944299).

6656469 is a wasteful number, since it uses less digits than its factorization.

6656469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844.

The product of its digits is 233280, while the sum is 42.

The square root of 6656469 is about 2580.0133720584. The cubic root of 6656469 is about 188.1111930868. Note that the first 4 decimals are identical.

The spelling of 6656469 in words is "six million, six hundred fifty-six thousand, four hundred sixty-nine".