813146065 has 16 divisors (see below), whose sum is σ = 983397888. Its totient is φ = 645454656.

The previous prime is 813146063. The next prime is 813146123. The reversal of 813146065 is 560641318.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 813146065 - 2¹ = 813146063 is a prime.

It is a super-2 number, since 2×813146065² = 1322413046049968450, which contains 22 as substring.

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 813146065.

It is not an unprimeable number, because it can be changed into a prime (813146063) 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, 455164 + ... + 456946.

It is an arithmetic number, because the mean of its divisors is an integer number (61462368).

Almost surely, 2^813146065 is an apocalyptic number.

It is an amenable number.

813146065 is a deficient number, since it is larger than the sum of its proper divisors (170251823).

813146065 is a wasteful number, since it uses less digits than its factorization.

813146065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 813146065 is about 28515.7161053339. The cubic root of 813146065 is about 933.3750513524.

The spelling of 813146065 in words is "eight hundred thirteen million, one hundred forty-six thousand, sixty-five".