801065813 has 4 divisors (see below), whose sum is σ = 802711200. Its totient is φ = 799420428.

The previous prime is 801065801. The next prime is 801065861. The reversal of 801065813 is 318560108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 801065813 - 2²⁴ = 784288597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801065813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801062813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821963 + ... + 822936.

It is an arithmetic number, because the mean of its divisors is an integer number (200677800).

Almost surely, 2^801065813 is an apocalyptic number.

It is an amenable number.

801065813 is a deficient number, since it is larger than the sum of its proper divisors (1645387).

801065813 is a wasteful number, since it uses less digits than its factorization.

801065813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645386.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 801065813 is about 28303.1060662960. The cubic root of 801065813 is about 928.7298392565.

The spelling of 801065813 in words is "eight hundred one million, sixty-five thousand, eight hundred thirteen".