6656492420 has 48 divisors (see below), whose sum is σ = 14136595200. Its totient is φ = 2632592256.

The previous prime is 6656492413. The next prime is 6656492429. The reversal of 6656492420 is 242946566.

It is not an unprimeable number, because it can be changed into a prime (6656492429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528406 + ... + 1532754.

It is an arithmetic number, because the mean of its divisors is an integer number (294512400).

Almost surely, 2^6656492420 is an apocalyptic number.

It is an amenable number.

6656492420 is an abundant number, since it is smaller than the sum of its proper divisors (7480102780).

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

6656492420 is a wasteful number, since it uses less digits than its factorization.

6656492420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204 (or 5202 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 6656492420 is about 81587.3300212723. The cubic root of 6656492420 is about 1881.1141370226.

The spelling of 6656492420 in words is "six billion, six hundred fifty-six million, four hundred ninety-two thousand, four hundred twenty".