801620801 has 2 divisors, whose sum is σ = 801620802. Its totient is φ = 801620800.

The previous prime is 801620791. The next prime is 801620843. The reversal of 801620801 is 108026108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788261776 + 13359025 = 28076^2 + 3655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801620801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (801620201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400810400 + 400810401.

It is an arithmetic number, because the mean of its divisors is an integer number (400810401).

Almost surely, 2^801620801 is an apocalyptic number.

It is an amenable number.

801620801 is a deficient number, since it is larger than the sum of its proper divisors (1).

801620801 is an equidigital number, since it uses as much as digits as its factorization.

801620801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 801620801 is about 28312.9087343565. The cubic root of 801620801 is about 928.9442681339.

Adding to 801620801 its reverse (108026108), we get a palindrome (909646909).

The spelling of 801620801 in words is "eight hundred one million, six hundred twenty thousand, eight hundred one".