813804601 has 2 divisors, whose sum is σ = 813804602. Its totient is φ = 813804600.

The previous prime is 813804557. The next prime is 813804679. The reversal of 813804601 is 106408318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573554601 + 240250000 = 23949^2 + 15500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813804601 is a prime.

It is not a weakly prime, because it can be changed into another prime (813801601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406902300 + 406902301.

It is an arithmetic number, because the mean of its divisors is an integer number (406902301).

Almost surely, 2^813804601 is an apocalyptic number.

It is an amenable number.

813804601 is a deficient number, since it is larger than the sum of its proper divisors (1).

813804601 is an equidigital number, since it uses as much as digits as its factorization.

813804601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 813804601 is about 28527.2606641437. The cubic root of 813804601 is about 933.6269516541.

The spelling of 813804601 in words is "eight hundred thirteen million, eight hundred four thousand, six hundred one".