6656374 has 16 divisors (see below), whose sum is σ = 10322928. Its totient is φ = 3216672.

The previous prime is 6656371. The next prime is 6656387. The reversal of 6656374 is 4736566.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656371) 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, 21529 + ... + 21835.

It is an arithmetic number, because the mean of its divisors is an integer number (645183).

Almost surely, 2^6656374 is an apocalyptic number.

6656374 is a deficient number, since it is larger than the sum of its proper divisors (3666554).

6656374 is a wasteful number, since it uses less digits than its factorization.

6656374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 90720, while the sum is 37.

The square root of 6656374 is about 2579.9949612354. The cubic root of 6656374 is about 188.1102981855.

The spelling of 6656374 in words is "six million, six hundred fifty-six thousand, three hundred seventy-four".