6656874 has 32 divisors (see below), whose sum is σ = 15292800. Its totient is φ = 1892352.

The previous prime is 6656861. The next prime is 6656879. The reversal of 6656874 is 4786566.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656879) 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, 14602 + ... + 15050.

It is an arithmetic number, because the mean of its divisors is an integer number (477900).

Almost surely, 2^6656874 is an apocalyptic number.

6656874 is an abundant number, since it is smaller than the sum of its proper divisors (8635926).

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

6656874 is a wasteful number, since it uses less digits than its factorization.

6656874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its digits is 241920, while the sum is 42.

The square root of 6656874 is about 2580.0918588298. The cubic root of 6656874 is about 188.1150080969.

The spelling of 6656874 in words is "six million, six hundred fifty-six thousand, eight hundred seventy-four".