6648426357 has 8 divisors (see below), whose sum is σ = 8889681984. Its totient is φ = 4419727488.

The previous prime is 6648426347. The next prime is 6648426359. The reversal of 6648426357 is 7536248466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6648426357 - 2⁴ = 6648426341 is a prime.

It is a super-4 number, since 4×6648426357⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648426359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3137953 + ... + 3140070.

It is an arithmetic number, because the mean of its divisors is an integer number (1111210248).

Almost surely, 2^6648426357 is an apocalyptic number.

It is an amenable number.

6648426357 is a deficient number, since it is larger than the sum of its proper divisors (2241255627).

6648426357 is a wasteful number, since it uses less digits than its factorization.

6648426357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278379.

The product of its digits is 5806080, while the sum is 51.

The square root of 6648426357 is about 81537.8829563290. The cubic root of 6648426357 is about 1880.3540110655.

The spelling of 6648426357 in words is "six billion, six hundred forty-eight million, four hundred twenty-six thousand, three hundred fifty-seven".