6397622020 has 48 divisors (see below), whose sum is σ = 13685474880. Its totient is φ = 2511782784.

The previous prime is 6397621991. The next prime is 6397622059. The reversal of 6397622020 is 202267936.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 219547 + ... + 246973.

It is an arithmetic number, because the mean of its divisors is an integer number (285114060).

Almost surely, 2^6397622020 is an apocalyptic number.

It is an amenable number.

6397622020 is an abundant number, since it is smaller than the sum of its proper divisors (7287852860).

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

6397622020 is a wasteful number, since it uses less digits than its factorization.

6397622020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27652 (or 27650 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 6397622020 is about 79985.1362441798. The cubic root of 6397622020 is about 1856.4055548464.

Adding to 6397622020 its reverse (202267936), we get a palindrome (6599889956).

The spelling of 6397622020 in words is "six billion, three hundred ninety-seven million, six hundred twenty-two thousand, twenty".