6420888470 has 8 divisors (see below), whose sum is σ = 11557599264. Its totient is φ = 2568355384.

The previous prime is 6420888437. The next prime is 6420888493. The reversal of 6420888470 is 748880246.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321044414 + ... + 321044433.

It is an arithmetic number, because the mean of its divisors is an integer number (1444699908).

Almost surely, 2^6420888470 is an apocalyptic number.

6420888470 is a deficient number, since it is larger than the sum of its proper divisors (5136710794).

6420888470 is a wasteful number, since it uses less digits than its factorization.

6420888470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642088854.

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 6420888470 is about 80130.4465855520. The cubic root of 6420888470 is about 1858.6532500674.

The spelling of 6420888470 in words is "six billion, four hundred twenty million, eight hundred eighty-eight thousand, four hundred seventy".