6420500164 has 48 divisors (see below), whose sum is σ = 12206315520. Its totient is φ = 2937427200.

The previous prime is 6420500111. The next prime is 6420500201. The reversal of 6420500164 is 4610050246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3564064 + ... + 3565864.

It is an arithmetic number, because the mean of its divisors is an integer number (254298240).

Almost surely, 2^6420500164 is an apocalyptic number.

It is an amenable number.

6420500164 is a deficient number, since it is larger than the sum of its proper divisors (5785815356).

6420500164 is a wasteful number, since it uses less digits than its factorization.

6420500164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 6420500164 is about 80128.0235872569. The cubic root of 6420500164 is about 1858.6157816930.

The spelling of 6420500164 in words is "six billion, four hundred twenty million, five hundred thousand, one hundred sixty-four".