823489645 has 8 divisors (see below), whose sum is σ = 1078022880. Its totient is φ = 598901520.

The previous prime is 823489627. The next prime is 823489651. The reversal of 823489645 is 546984328.

823489645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 823489645 - 2⁵ = 823489613 is a prime.

It is a super-3 number, since 3×823489645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7486215 + ... + 7486324.

It is an arithmetic number, because the mean of its divisors is an integer number (134752860).

Almost surely, 2^823489645 is an apocalyptic number.

It is an amenable number.

823489645 is a deficient number, since it is larger than the sum of its proper divisors (254533235).

823489645 is a wasteful number, since it uses less digits than its factorization.

823489645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14972555.

The product of its digits is 1658880, while the sum is 49.

The square root of 823489645 is about 28696.5092824894. The cubic root of 823489645 is about 937.3160366741.

It can be divided in two parts, 8234 and 89645, that added together give a palindrome (97879).

The spelling of 823489645 in words is "eight hundred twenty-three million, four hundred eighty-nine thousand, six hundred forty-five".