823238065 has 16 divisors (see below), whose sum is σ = 1077350400. Its totient is φ = 600230592.

The previous prime is 823238021. The next prime is 823238071. The reversal of 823238065 is 560832328.

It is not a de Polignac number, because 823238065 - 2¹⁹ = 822713777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75025 + ... + 85294.

It is an arithmetic number, because the mean of its divisors is an integer number (67334400).

Almost surely, 2^823238065 is an apocalyptic number.

It is an amenable number.

823238065 is a deficient number, since it is larger than the sum of its proper divisors (254112335).

823238065 is a wasteful number, since it uses less digits than its factorization.

823238065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160416.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 823238065 is about 28692.1254876665. The cubic root of 823238065 is about 937.2205754509.

The spelling of 823238065 in words is "eight hundred twenty-three million, two hundred thirty-eight thousand, sixty-five".