823415513 has 8 divisors (see below), whose sum is σ = 843244032. Its totient is φ = 803683296.

The previous prime is 823415507. The next prime is 823415543. The reversal of 823415513 is 315514328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 823415513 - 2²² = 819221209 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 823415513.

It is not an unprimeable number, because it can be changed into a prime (823415503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6620 + ... + 41117.

It is an arithmetic number, because the mean of its divisors is an integer number (105405504).

Almost surely, 2^823415513 is an apocalyptic number.

It is an amenable number.

823415513 is a deficient number, since it is larger than the sum of its proper divisors (19828519).

823415513 is a wasteful number, since it uses less digits than its factorization.

823415513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48151.

The product of its digits is 14400, while the sum is 32.

The square root of 823415513 is about 28695.2175980598. The cubic root of 823415513 is about 937.2879095454.

The spelling of 823415513 in words is "eight hundred twenty-three million, four hundred fifteen thousand, five hundred thirteen".