6656386000 has 80 divisors (see below), whose sum is σ = 17558394048. Its totient is φ = 2420496000.

The previous prime is 6656385997. The next prime is 6656386003. The reversal of 6656386000 is 6836566.

It is an interprime number because it is at equal distance from previous prime (6656385997) and next prime (6656386003).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656386003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129282 + ... + 173281.

Almost surely, 2^6656386000 is an apocalyptic number.

It is an amenable number.

6656386000 is an abundant number, since it is smaller than the sum of its proper divisors (10902008048).

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

6656386000 is a wasteful number, since it uses less digits than its factorization.

6656386000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302597 (or 302581 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 6656386000 is about 81586.6778340680. The cubic root of 6656386000 is about 1881.1041122617.

The spelling of 6656386000 in words is "six billion, six hundred fifty-six million, three hundred eighty-six thousand".