6420493470 has 32 divisors (see below), whose sum is σ = 16079150592. Its totient is φ = 1637690912.

The previous prime is 6420493439. The next prime is 6420493477. The reversal of 6420493470 is 743940246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420493477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4651842 + ... + 4653221.

It is an arithmetic number, because the mean of its divisors is an integer number (502473456).

Almost surely, 2^6420493470 is an apocalyptic number.

6420493470 is an abundant number, since it is smaller than the sum of its proper divisors (9658657122).

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

6420493470 is a wasteful number, since it uses less digits than its factorization.

6420493470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9305096.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 6420493470 is about 80127.9818165914. The cubic root of 6420493470 is about 1858.6151357632.

The spelling of 6420493470 in words is "six billion, four hundred twenty million, four hundred ninety-three thousand, four hundred seventy".