99560820 has 24 divisors (see below), whose sum is σ = 278770464. Its totient is φ = 26549536.

The previous prime is 99560801. The next prime is 99560827. The reversal of 99560820 is 2806599.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99560827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829614 + ... + 829733.

It is an arithmetic number, because the mean of its divisors is an integer number (11615436).

Almost surely, 2^99560820 is an apocalyptic number.

It is an amenable number.

99560820 is an abundant number, since it is smaller than the sum of its proper divisors (179209644).

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

99560820 is a wasteful number, since it uses less digits than its factorization.

99560820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659359 (or 1659357 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 99560820 is about 9978.0168370273. The cubic root of 99560820 is about 463.4783885265.

The spelling of 99560820 in words is "ninety-nine million, five hundred sixty thousand, eight hundred twenty".