99820656 has 60 divisors (see below), whose sum is σ = 300854008. Its totient is φ = 30713472.

The previous prime is 99820649. The next prime is 99820657. The reversal of 99820656 is 65602899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99820657) 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 11 ways as a sum of consecutive naturals, for example, 24790 + ... + 28533.

Almost surely, 2^99820656 is an apocalyptic number.

It is an amenable number.

99820656 is an abundant number, since it is smaller than the sum of its proper divisors (201033352).

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

99820656 is a wasteful number, since it uses less digits than its factorization.

99820656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53350 (or 53341 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 99820656 is about 9991.0287758569. The cubic root of 99820656 is about 463.8812369451.

The spelling of 99820656 in words is "ninety-nine million, eight hundred twenty thousand, six hundred fifty-six".