823605648 has 40 divisors (see below), whose sum is σ = 2128697088. Its totient is φ = 274399872.

The previous prime is 823605641. The next prime is 823605659. The reversal of 823605648 is 846506328.

It is not an unprimeable number, because it can be changed into a prime (823605641) 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, 159361 + ... + 164447.

Almost surely, 2^823605648 is an apocalyptic number.

It is an amenable number.

823605648 is an abundant number, since it is smaller than the sum of its proper divisors (1305091440).

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

823605648 is a wasteful number, since it uses less digits than its factorization.

823605648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471 (or 8465 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 823605648 is about 28698.5304153366. The cubic root of 823605648 is about 937.3600470907.

The spelling of 823605648 in words is "eight hundred twenty-three million, six hundred five thousand, six hundred forty-eight".