6420435308 has 18 divisors (see below), whose sum is σ = 13070172276. Its totient is φ = 2751615048.

The previous prime is 6420435277. The next prime is 6420435319. The reversal of 6420435308 is 8035340246.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16378466 + ... + 16378857.

It is an arithmetic number, because the mean of its divisors is an integer number (726120682).

Almost surely, 2^6420435308 is an apocalyptic number.

It is an amenable number.

6420435308 is an abundant number, since it is smaller than the sum of its proper divisors (6649736968).

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

6420435308 is a wasteful number, since it uses less digits than its factorization.

6420435308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32757341 (or 32757332 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 6420435308 is about 80127.6188838780. The cubic root of 6420435308 is about 1858.6095234687.

The spelling of 6420435308 in words is "six billion, four hundred twenty million, four hundred thirty-five thousand, three hundred eight".