823287641 has 8 divisors (see below), whose sum is σ = 929102400. Its totient is φ = 722634640.

The previous prime is 823287631. The next prime is 823287683. The reversal of 823287641 is 146782328.

823287641 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823287641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823287631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290101 + ... + 1290738.

It is an arithmetic number, because the mean of its divisors is an integer number (116137800).

Almost surely, 2^823287641 is an apocalyptic number.

It is an amenable number.

823287641 is a deficient number, since it is larger than the sum of its proper divisors (105814759).

823287641 is a wasteful number, since it uses less digits than its factorization.

823287641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580879.

The product of its digits is 129024, while the sum is 41.

The square root of 823287641 is about 28692.9894050794. The cubic root of 823287641 is about 937.2393884434.

The spelling of 823287641 in words is "eight hundred twenty-three million, two hundred eighty-seven thousand, six hundred forty-one".