8208420641 has 16 divisors (see below), whose sum is σ = 9152688960. Its totient is φ = 7315776000.

The previous prime is 8208420631. The next prime is 8208420643. The reversal of 8208420641 is 1460248028.

It is a cyclic number.

It is not a de Polignac number, because 8208420641 - 2¹⁴ = 8208404257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8208420643) 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, 1046165 + ... + 1053981.

It is an arithmetic number, because the mean of its divisors is an integer number (572043060).

Almost surely, 2^8208420641 is an apocalyptic number.

It is an amenable number.

8208420641 is a deficient number, since it is larger than the sum of its proper divisors (944268319).

8208420641 is a wasteful number, since it uses less digits than its factorization.

8208420641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11104.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 8208420641 is about 90600.3346627373. The cubic root of 8208420641 is about 2017.2197021822.

Adding to 8208420641 its reverse (1460248028), we get a palindrome (9668668669).

The spelling of 8208420641 in words is "eight billion, two hundred eight million, four hundred twenty thousand, six hundred forty-one".