823899648 has 320 divisors, whose sum is σ = 2683828224. Its totient is φ = 223027200.

The previous prime is 823899623. The next prime is 823899697. The reversal of 823899648 is 846998328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26577393 + ... + 26577423.

Almost surely, 2^823899648 is an apocalyptic number.

823899648 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823899648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341914112).

823899648 is an abundant number, since it is smaller than the sum of its proper divisors (1859928576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823899648 is a wasteful number, since it uses less digits than its factorization.

823899648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 60 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 57.

The square root of 823899648 is about 28703.6521718056. The cubic root of 823899648 is about 937.4715693423.

The spelling of 823899648 in words is "eight hundred twenty-three million, eight hundred ninety-nine thousand, six hundred forty-eight".